N. Jork, N.S.H Simon: Analysis of Unregularized Optimal Control Problems Constrained by the Boussinesq System. Research Report 2024-01 (PDF), VADOR, TU Wien, 2024.

A. Daniilidis, M. Haddou, T. Minh Lê, O. Ley: Solving Nonlinear Absolute Value Equations. Research Report 2024-02 (PDF), VADOR. TU Wien, 2024.

N. Jork: Finite Element Error Analysis of Affine Optimal Control Problems. Research Report 2023-01 (PDF), VADOR, TU Wien, 2023.

F. Ferraccioli, N. I. Stilianakis, V. M. Veliov: A spatial epidemiological model with contact and mobility restrictions. Research Report 2023-02 (PDF), VADOR, TU Wien, 2023.

G. Angelov, R. Kovacevic, N. I. Stilianakis, V. M. Veliov: An immuno-epidemiological model with waning immunity after infection or vaccination. Research Report 2023-03 (PDF), VADOR, TU Wien, 2023.

L. Schuh, P.V. Markov, N. I. Stilianakis, V. M. Veliov: A mathematical model for the within-host (re)infection dynamics of SARS-CoV-2. Research Report 2023-04 (PDF), VADOR, TU Wien, 2023.

A. Daniilidis, D. Salas and S. Tapia Garcia: A slope generalization of Attouch Theorem, Research Report 2023-05, VADOR, TU Wien, 2023

A. Daniilidis, Le Minh Tri, D. Salas: Metric Compatibility in complete metric spaces. Research Report 2023-06, VADOR. TU Wien, 2023

A. Daniilidis, D. Salas, Steepest geometric descent for regularized quasiconvex functions, Research Report 2023-07, VADOR, TU Wien 2023

A. Dominguez Corella, N. Jork, S. Nečasová, H.S.H. Simon : Stability analysis of the Niavier-Stokes velocity tracking problem with bang-bang controls. Research Report 2023-08 (PDF), VADOR, TU Wien, 2023.

A. Domínguez Corella, N. Jork, V.M. Veliov: Stability in affine optimal control problems constrained by semilinear elliptic partial differential equations. Research Report 2022-01 (PDF), ORCOS, TU Wien, 2022. [Published in ESAIM: Control, Optimisation and Calculus of Variations,  COCV 28 (2022) 79, https://doi.org/10.1051/cocv/2022075]

E. Casas,  A. Domínguez Corella, N. Jork: New assumptions for stability analysis in elliptic optimal control problems. Research Report 2022-02 (PDF), ORCOS, TU Wien, 2022. [Published in SIAM Journal on Control and Optimization Vol. 61, Iss. 3 (2023) https://doi.org/10.1137/22M149199X]

N.P. Osmolovskii, V.M. Veliov: On the strong subregularity of the optimality mapping in an optimal control problem with pointwise inequality control constraints. Research Report 2022-03 (PDF), ORCOS, TU Wien, 2022. [Published in Applied Mathematics & Optimization (2023) 87:43, https://doi.org/10.1007/s00245-022-09959-9]

A. Domínguez Corella, N. Jork, V.M. Veliov: On the solution stability of parabolic optimal control
problems. Research Report 2022-04 (PDF), VADOR (formerly ORCOS), TU Wien, 2022 [Published in Computational Optimization and Applications, Springer March 2023. Open Access https://doi.org/10.1007/s10589-023-00473-4

A. Daniilidis, L. Miclo, D. Salas: Descent modulus and applications Research Report 2022-05 (PDF) VADOR, TU Wien, 2022

A. Daniilidis & D. Drusvyatskiy: The slope robustly determines convex functions Research Report 2022-06 (PDF) VADOR, TU Wien, 2022 [Published in Proceedings of the American Mathematical Society (2003), 151(11), 4751–4756. https://doi.org/10.1090/proc/16503

A. Daniilidis & M. Quincampoix: Extending Rademacher Theorem to Set-Valued Maps Research Report 2022-07 (PDF) VADOR, TU Wien, 2022

A. Domínguez Corella, N. Jork, V.M. Veliov: Solution stability of parabolic optimal problems with fixed-state distribution of controls. Research Report 2022-08 (PDF), VADOR (formerly ORCOS), TU Wien, 2022 [published in Serdica Mathematical Journal (2023) Sofia, Bulgaria, 49(1–3), pp. 155–186. https://doi.org/10.55630/serdica.2023.49.155-186]

J.P. Caulkins, D. Grass, G. Feichtinger, R.F.Hartl, P.M.Kort, A. Prskawetz, A. Seidl, S. Wrzaczek: COVID-19 and optimal lockdown strategies: The effect of new and more virulent strains. Research Report 2021-01 (PDF), ORCOS, TU Wien, 2021. [Published in Pandemics: Insurance and Social Protection, Springer 2022, pp 163–190. https://doi.org/10.1007/978-3-030-78334-1_9 ]

G. Angelov, R. Kovacevic, N.I. Stilianakis, and V.M. Veliov: Optimal vaccination strategies using a distributed epidemiological model applied to COVID-19. Research Report 2021-02 (PDF), ORCOS, TU Wien, 2021. [Published in Cent Eur J Oper Res (2022). https://doi.org/10.1007/s10100-022-00819-z ]

A. D. Corella,  V.M. Veliov: Hölder Regularity in Bang-Bang Type Affine Optimal Control Problems. Research Report 2021-03 (PDF), ORCOS, TU Wien, 2021. [Published in Large-Scale Scientific Computing. LSSC 2021, Springer Cham 2022.  https://doi.org/10.1007/978-3-030-97549-4_35 ]

N.P. Osmolovskii, V.M. Veliov: On the Strong Metric Subregularity in Mathematical Programming. Research Report 2021-04 (PDF), ORCOS, TU Wien, 2021. [Published in Journal of Mathematical Analysis and Applications 500(1):125077 DOI:10.1016/j.jmaa.2021.125077 ]

G. Angelov, A. Domínguez Corella, V.M. Veliov: On the accuracy of the model predictive control method. Research Report 2021-05 (PDF), ORCOS, TU Wien, 2021. [Published in  SIAM Journal on Control and Optimization Vol. 60, Iss. 4 (2022) https://doi.org/10.1137/21M1460430 ]

A. Daniilidis, M. Haddou, O. Ley: A convex function satisfying the Lojasiewicz inequality but failing the gradient conjecture both at zero and infinity. Research Report 2021-06 (PDF) ORCOS TU Wien, 2021. Published in Bull. London Math. Soc. 54 (2022), 590-608 DOI: 10.1112/blms.12586

A. Daniilidis, D. Salas: Determination of functions by metric slopes. Research Report 2021-07 (PDF) ORCOS TU Wien, 2021. Published in Proc. Amer. Math. Soc. 150 (2022), 4325-4333 DOI: https://doi.org/10.1090/proc/16153

G. Feichtinger, D. Grass, P. Kort, A. Seidl: On the Matthew effect in research careers: Abnormality on the boundary. Research Report 2020-01 (PDF), ORCOS, TU Wien, 2020. [published in: Journal of Economic Dynamics and Control, 2020, 104058; https://doi.org/10.1016/j.jedc.2020.104058 ]

R. Kovacevic, W. Semmler: Poverty traps and disaster insurance in a bi-level decision framework. Research Report 2020-02 (PDF), ORCOS, TU Wien, 2020. [published in Dynamic Economic Problems with Regime Switches, 2021, pp 57-83. https://doi.org/10.1007/978-3-030-54576-5_3]

R. Kovacevic: Arbitrage conditions for electricity markets with production and storage. Research Report 2020-03 (PDF), ORCOS, TU Wien, 2020. [published in Comput Manag Sci 16, 671–696 (2019). https://doi.org/10.1007/s10287-019-00347-3]

W. J. Gutjahr, R. Kovacevic, D. Wozabal, : Splitting a Random Pie: Nash-Type Bargaining with Coherent Acceptability Measures. Research Report 2020-04 (PDF), ORCOS, TU Wien, 2020. 

Y. Yegorov, F. Wirl, D. Grass, M. Eigruber, G. Feichtinger: On the Matthew Effect on Individual Investments in Skills in Arts, Sports and Science. Research Report 2020-05 (PDF), ORCOS, TU Wien, 2020. [published in JEBO-D-20-01586R3 https://doi.org/10.1016/j.jebo.2022.02.008]

D. Grass, G. Feichtinger, P.M. Kort, A. Seidl: Why (some) abnormal problems are “normal”. Research Report 2020-06 (PDF), ORCOS, TU Wien, 2020. [published in Systems & Control Letters, 2021, doi.org/10.1016/j.sysconle.2021.104971 ]

A. D. Corella, M. Quincampoix, V. Veliov: Strong bi-metric regularity in affine optimal control problems. Research Report 2020-07 (PDF), ORCOS, TU Wien, 2020. [published in Pure an Applied Functional Analysis, 9(6):1119-1137, 2021]

A.J. Novák, G. Feichtinger: Accumulation and Obsolescence of Research Knowledge. Research Report 2020-08 (PDF), ORCOS, TU Wien, 2020. [published in Cent Eur J Oper Res 30, 1151–1166 (2022). https://doi.org/10.1007/s10100-021-00755-4]

N.P. Osmolovskii, V.M. Veliov: On the Strong Metric Subregularity in Mathematical Programming. Research Report 2020-09 (PDF), ORCOS, TU Wien, 2020.  [published in Control and Cybernetics, vol.50, no.4, 2021, pp.457-471. https://doi.org/10.2478/candc-2021-0027 ]

J. Caulkins, D. Grass, G. Feichtinger, R. Hartl, Peter M. Kort, A. Prskawetz, A. Seidl, S. Wrzaczek: How Long Should the COVID-19 Lockdown Continue? Research Report 2020-10 (PDF), ORCOS, TU Wien, 2020. [published in PLOS ONE, 2020, doi.org/10.1371/journal.pone.0243413 ]

J. Caulkins, D. Grass, G. Feichtinger, R. Hartl, Peter M. Kort, A. Prskawetz, A. Seidl, S. Wrzaczek: The optimal lockdown intensity for COVID-19. Research Report 2020-11 (PDF), ORCOS, TU Wien, 2020. [published in Journal of Mathematical Economics, 2021, https://doi.org/10.1016/j.jmateco.2021.102489 ]

N.P. Osmolovskii, V.M. Veliov: On the strong subregularity of the optimality mapping in mathematical programming and calculus of variations. Research Report 2020-12 (PDF), ORCOS, TU Wien, 2020. [published in Journal of Mathematical Analysis and Applications, 500(1), August 1, 2021, doi.org/10.1016/j.jmaa.2021.125077]

R. Kovacevic, N.I. Stilianakis, V. M. Veliov: A Distributed Optimal Control Epidemiological Model Applied to COVID-19 Pandemic. Research Report 2020-13 (PDF), ORCOS, TU Wien, 2020. [published in SIAM Journal on Control and Optimization Vol. 60, Iss. 2 (2022) DOI 10.1137/20M1373840]

G. Feichtinger, A.J. Novak, F. Wirl: Institutional change, education and population growth: lessons from dynamic modelling. Research Report 2020-14 (PDF), ORCOS, TU Wien, 2020. [published in Dynamic Economic Problems with Regime Switches, 2021, pp 37-56. Doi 10.1007/978-3-030-54576-5_2 ]

E. Augeraud-Veron, R. Boucekkine, V.M. Veliov: Distributed Optimal Control Models in Environmental Economics: A Review. Research Report 2019-01 (PDF), ORCOS, TU Wien, 2019. [published in Mathematical Modelling of Natural Phenomena, 2019, Vol.14, No.1/106]

Y. Yegorov, D. Grass, M. Mirescu, G. Feichtinger, F. Wirl: Growth and collapse of empires: a dynamic optimization model. Research Report 2019-02 (PDF), ORCOS, TU Wien, 2019. [published in Austrian Academy of Sciences, Vienna Inst. of Demography, Working paper 05/2019 and in Journal of Optimization Theory and Applications (2020) 186:620–643. https://doi.org/10.1007/s10957-020-01719-5]

G. Feichtinger,
D. Grass,
M. Winkler-Dworak: The Mathematics of Ageing. Research Report 2019-03 (PDF), ORCOS, TU Wien, 2019. [published in Central European Journal of Operations Research 28, pp.371–399(2020), doi:10.1007/s10100-019-00661-w]

N.P. Osmolovskii, V.M. Veliov: Metric sub-regularity in optimal control of affine problems with free end state. Research Report 2019-04 (PDF), ORCOS, TU Wien, 2019.[published in ESAIM: Control, Optimisation and Calculus of Variations, 2020]

S.M. Aseev, V.M. Veliov: Another View of the Maximum Principle for Infinite-Horizon Optimal Control Problems in Economics. Research Report 2019-05 (PDF), ORCOS, TU Wien, 2019 (updated version of Research Report 2017-05). [published in Uspekhi Mat. Nauk, 74:6(450) (2019), 3–54]

G. Feichtinger: Disparitäten in Wissenschaftskarrieren. Research Report 2019-06 (PDF), ORCOS, TU Wien, 2019. [published in OR-News Nr. 65, 2019, 6-13]

N.P. Osmolovskii, V.M. Veliov: On the regularity of Mayer-type affine optimal control problems. Research Report 2019-07 (PDF), ORCOS, TU Wien, 2019.[published in Lirkov I., Margenov S. (eds) Large-Scale Scientific Computing. LSSC 2019. Lecture Notes in Computer Science, vol 11958, 2020. Springer, Cham, DOI https://doi.org/10.1007/978-3-030-41032-2_6]

A.L. Dontchev, I.V. Kolmanovsky, D. Liao-McPherson, M.M. Nicotra, V.M. Veliov: Sensitivity-based Warmstarting for Constrained Model Predictive Control. Research Report 2019-08 (PDF), ORCOS, TU Wien, 2019. [published in IEEE Transactions on Automatic Control, 65(10), pp 4288-4294, 2020. doi:10.1109/TAC.2019.2954359 ]

A.L. Dontchev, I.V. Kolmanovsky, M.I. Krastanov, V.M. Veliov: Approximating open-loop and closed-loop optimal control by model predictive control. Research Report 2019-09 (PDF), ORCOS, TU Wien, 2019. [published in 2020 European Control Conference (ECC), Saint Petersburg, Russia, 2020, pp. 190-195.]

R. Cibulka, J. Preininger, T. Roubal: On uniform regularity and strong regularity. Research Report 2018-01 (PDF), ORCOS, TU Wien, 2018 [published in Optimization, 2019, 68(2-3):549-577, https://doi.org/10.1080/02331934.2018.1547383]

Phan Tu Vuong: On the Weak Convergence of the Extragradient Method for Solving Pseudo-Monotone Variational Inequalities. Research Report 2018-02 (PDF), ORCOS, TU Wien, 2018 [published in Journal of Optimization Theory and Applications, 2018, Vol 176(2):399-409, doi 10.1007/s10957-017-1214-0]

R. Kovacevic: Arbitrage Conditions for Electricity Markets with Production and Storage. Research Report 2018-03 (PDF), ORCOS, TU Wien, 2018 [published in Computational Management Science, 2019, https://doi.org/10.1007/s10287-019-00347-3]

A. L. Dontchev, M. I. Krastanov, V. M. Veliov: On the existence of Lipschitz continuous optimal feedback control. Research Report 2018-04 (PDF), ORCOS, TU Wien, 2018 [published in Vietnam Journal of Mathematics, 2019, 47(3) 579-597, DOI 10.1007/s10013-019-00347-5]

A. L. Dontchev, I. V. Kolmanovsky, M. I. Krastanov, M. M. Nicotra, V. M. Veliov: Lipschitz Stability in Discretized Optimal Control. Research Report 2018-05 (PDF), ORCOS, TU Wien, 2018 [published in SIAM Journal on Control and Optimization, 2019, 57(1), 468–489]

A. L. Dontchev, M. Huang, I. V. Kolmanovsky, M. M. Nicotra: Inexact Newton-Kantorovich Methods for Constrained Nonlinear Model Predictive Control. Research Report 2018-06 (PDF), ORCOS, TU Wien, 2018 [published in IEEE Transactions on Automatic Control, 2019, 64(9), 3602-3615]

A. L. Dontchev, I. V. Kolmanovsky, M. I. Krastanov, V. M. Veliov, P. T. Vuong: Approximating optimal finite horizon feedback by model predictive control. Research Report 2018-07 (PDF), ORCOS, TU Wien, 2018 [published in Systems & Control Letters, 2020, Vol. 139, https://doi.org/10.1016/j.sysconle.2020.104666]

M. Quincampoix, T. Scarinci, V.M. Veliov: On the metric regularity of affine optimal control problems. Research Report 2018-08 (PDF), ORCOS, TU Wien, 2018 [published in Journal of Convex Analysis , 2020,  27(2)509-533]

G. Feichtinger, D. Grass, P.M. Kort: Optimal scientific production over the life cycle. Research Report 2018-09 (PDF), ORCOS, TU Wien, 2018. [published in Journal of Economic Dynamics and Control, Volume 108, November 2019, 103752, https://doi.org/10.1016/j.jedc.2019.103752]

D. Grass, H. Uecker: Optimal management and spatial patterns in a distributed shallow lake model. Research Report 2017-01 (PDF), ORCOS, TU Wien, 2017 [published in Electronic J. Differential Equations, Vol. 2017 (2017), No. 01, pp. 1-21]

D. Grass, M. Kress, J.P. Caulkins, G. Feichtinger, A. Seidl: Lanchester Model for Three-Way Combat. Research Report 2017-02 (PDF), ORCOS, TU Wien, 2017 [published in European Journal of Operational Research 264 (2018) 46-54]

D. Grass, A. Xepapadeas, A.d.Zeeuw: Optimal Management of Ecosystem Services with Pollution Traps: The Lake Model Revisited. Research Report 2017-03 (PDF), ORCOS, TU Wien, 2017 [published in Journal of the Association of Environmental and Resource Economists, Vol. 4, No. 4, December 2017]

J. Preininger, T. Scarinci, V.M. Veliov: On the Regularity of Linear-Quadratic Optimal Control Problems with Bang-Bang Solutions. Research Report 2017-04 (PDF), ORCOS, TU Wien, 2017 [published in LSSC, 2018, pp237-245]

S.M. Aseev, V.M. Veliov: Another View of the Maximum Principle for Infinite-Horizon Optimal Control Problems in Economics. Research Report 2017-05 (PDF), ORCOS, TU Wien, 2017 [published in Russian Math. Surveys 74:6, 963-1011 (2019), uspekihi Mat. Nauk 76:6,3-54]

T. Scarinci, V.M. Veliov: Higher-Order Numerical Scheme for Linear Quadratic Problems with Bang-Bang Controls. Research Report 2017-06 (PDF), ORCOS, TU Wien, 2017 [published in Computational Optimization and Applications, 2018, 69:403-422]

J. Preininger, T. Scarinci, V.M. Veliov: Metric regularity properties in bang-bang type linear-quadratic optimal control problems. Research Report 2017-07 (PDF), ORCOS, TU Wien, 2017 [published in Set-Valued and Variational Analysis, 2018, 27(2)381-404  DOI 10.1007/s11228-018-0488-1]

Phan Tu Vuong, J.J. Strodiot: The Glowinski  ̶  Le Tallec splitting method revisited in the framework of equilibrium problems in Hilbert spaces. Research Report 2017-08 (PDF), ORCOS, TU Wien, 2017 [published in Journal of Global Optimization, 2017, doi 10.1007/s10898-017-0575-0]

N.T.T. Ha, J. J. Strodiot, Phan Tu Vuong: On the global exponential stability of a projected dynamical system for strongly pseudomonotone variational inequalities. Research Report 2017-09 (PDF), ORCOS, TU Wien, 2017 [published in Optimization Letters, 2018, doi 10.1007/s11590-018-1230-5 ]

J. Preininger, Phan Tu Vuong: On the Convergence of the Gradient Projection Method for Optimal Control Problems with Bang-Bang Solutions. Research Report 2017-10 (PDF), ORCOS, TU Wien, 2017 [published in Computational Optimization and Applications, 2018, 70(1):221-238, doi 10.1007/s10589-018-9981-6 ]

V.M.Veliov, Phan Tu Vuong: Gradient Methods on Strongly Convex Feasible Sets and Optimal Control of Affine Systems. Research Report 2017-11 (PDF), ORCOS, TU Wien, 2017 [published in Applied Mathematics & Optimization, 2018. doi 10.1007/s00245-018-9528-3]

N.T.T. Van, J.J. Strodiot, V.H. Nguyen and Phan Tu Vuong: An extragradient-type method for solving nonmonotone quasi-equilibrium problems. Research Report 2017-12 (PDF), ORCOS, TU Wien, 2017 [published in Optimization, 2017, doi 10.1080/02331934.2017.1416610]

J.P. Caulkins, G. Tragler: Dynamic Drug Policy: Optimally Varying the Mix of Treatment, Price-Raising Enforcement, and Primary Prevention Over Time. Research Report 2016-01 (PDF), ORCOS, TU Wien, 2016  [published in “Dynamic Perspectives on Managerial Decision Making – Essays in Honor of Richard Hartl”, Springer International Publishing Switzerland, 2016, ISBN: 978-3-319-39118-2, 149 – 166]

S. Wrzaczek, E.H. Kaplan, J.P. Caulkins, A. Seidl, G. Feichtinger: Differential Terror Queue Games. Research Report 2016-02 (PDF), ORCOS, TU Wien, 2016  [published in Dynamic Games and Applications, 2016, DOI: 10.1007/s13235-016-0195-1]

V.M. Veliov,  A. Widder: Modeling and Estimation of Infectious Diseases in a Population with Heterogeneous Dynamic Immunity. Research Report 2016-03 (PDF), ORCOS, TU Wien, 2016 [published in Journal of Biological Dynamics, 2016, 10(1):457-476]

A. Pietrus, T. Scarinci and V.M. Veliov: High Order Discrete Approximations to Mayer’s Problems for Linear Systems. Research Report 2016-04 (PDF), ORCOS, TU Wien, 2016 [published in SIAM J. Control and Optim., 2018, 56(1)102-119]

A. Widder: Aggregation and optimisation in epidemiological models of heterogeneous populations. Research Report 2016-05 (PDF available on request), ORCOS, TU Wien, 2016

A. Böhm,  N. I. Stilianakis, A. Widder: Optimal Control of Infectious Diseases in a Population with Heterogeneous Dynamic Immunity. Research Report 2016-06 (PDF), ORCOS, TU Wien, 2016

R. Cibulka, A. L. Dontchev, M. Krastanov, V. M. Veliov: Metrically Regular Differential Generalized Equations. Research Report 2016-07 (PDF), ORCOS, TU Wien, 2016 [published in SIAM J. Control and Optim., 2018, 56(1), 316-342]

A. Widder: On the usefulness of set-membership estimation in epidemiology of infectious diseases. Research Report 2016-08 (PDF), ORCOS, TU Wien, 2016

S. M. Aseev, M. I. Krastanov, V. M. Veliov: Optimality Conditions for Discrete-Time Optimal Control on Infinite Horizon.  Research Report 2016-09 (PDF), ORCOS, TU Wien, 2016 [published in Pure and Applied Functional Analysis, 2017, 2(3)395-409]

F. El Ouardighi, G. Erickson, D. Grass, S. Jørgensen: Contracts and Information Structure in a Supply Chain with Operations and Marketing Interaction.  Research Report 2016-10 (PDF), ORCOS, TU Wien, 2016 [published in International Game Theory Review, 2016, 18(4) pp 1650014, 1-36]

J. Grames, A. Fürnkranz-Prskawetz, D. Grass, A. Viglione, G. Blöschl: Modelling the interaction between flooding events and economic growth.  Research Report 2016-11 (PDF), ORCOS, TU Wien, 2016 [published in Journal of Ecological Economics, 2016, 129:193-209]

N.P. Osmolovskii, V.M. Veliov: Optimal control of age-structured systems with mixed state-control constraints. Research Report 2016-12 (PDF), ORCOS, TU Wien, 2016 [published in J. Math. Analysis and Appl., 2017, 455:396-421]

A. O. Belyakov, A. A. Davydov, V. M. Veliov: Optimal cyclic harvesting of a renewable resource. Research Report 2016-13 (PDF), ORCOS, TU Wien, 2016 [published in Doklady Mathematics, 2017,  96(2): 472–474 and Proceedings of the USSR Academy of Sciences, 2017, 476 (4):1-4 (in Russian)]

P. Grandits, R. M. Kovacevic, V. M. Veliov: Optimal control and the Value of Information for a Stochastic Epidemiological SIS-Model. Research Report 2016-14 (PDF), ORCOS, TU Wien, 2016  [published in Journal of Mathematical Analysis and Applications, 2019, 476(2):665-695]

V.M. Veliov: Numerical Approximations in Optimal Control of a Class of Heterogeneous Systems. Research Report 2015-01 (PDF), ORCOS, TU Wien, 2015 [published in Computers & Mathematics with Applications, 2015, 70(11):2652-2660, doi:10.1016/j.camwa.2015.04.029]

R.M. Kovacevic and A. Pichler: Tree Approximation for Discrete Time Stochastic Processes — A Process Distance Approach. Research Report 2015-02 (PDF), ORCOS, TU Wien, 2015 [published in Annals of Operations Research, 2015, 235(1):395-421, DOI 10.1007/s10479-015-1994-2]

T. Breuer and R.M. Kovacevic: Multiperiod Maximum Loss Is Time Unit Invariant – a Short Note. Research Report 2015-03 (PDF), ORCOS, TU Wien, 2015 [published open access: Kovacevic and Breuer SpringerPlus (2016) 5:1336 DOI 10.1186/s40064-016-2959-x]

R.M. Kovacevic: Valuation and Pricing of Electricity Delivery Contracts – The Producer´s View. Research Report 2015-04 (PDF), ORCOS, TU Wien, 2015 [published in Annals of Operations Research, 2019, 275:421-460, doi 10.1007/s10479-018-3010-0]

J. P. Caulkins, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort and A. Seidl: History-Dependence Generated by the Interaction of Pricing, Advertising and Experience Quality. Research Report 2015-05 (PDF), ORCOS, TU Wien, 2015 [published in European J of Operational Reserach, 2017, 877-885]

A.L. Dontchev and V.M. Veliov: Regularity Properties of Mappings in Optimal Control. Research Report 2015-06 (PDF), ORCOS, TU Wien, 2015 [published in Control Processes., pp. 35–41, Proc. Internat. Conf. dedicated to the 90th anniversary of N.N. Krasovskii. Publisher: Institute of Mathematics and Mechanics, Ural Branch of the RAC, 2015]

B. Skritek: On the Optimal Control of Heterogeneous Systems. Research Report 2015-07 (PDF), ORCOS, TU Wien, 2015

A.O. Belyakov and V.M. Veliov: On Optimal Harvesting in Age-Structured Populations. Research Report 2015-08 (PDF), ORCOS, TU Wien, 2015 [published in “Dynamic Perspectives on Managerial Decision Making – Essays in Honor of Richard Hartl”, Springer International Publishing Switzerland, 2016, ISBN: 978-3-319-39118-2, 149 – 166.

R.M. Kovacevic: Stochastic SIS Epidemic Models – The PDE-Approach. Research Report 2015-09 (PDF), ORCOS, TU Wien, 2015

V.M. Veliov: Relaxation of Euler-Type Discrete-Time Control System. Research Report 2015-10 (PDF), ORCOS, TU Wien, 2015 [published in In Large-Scale Scientific Computing, I. Lirkov, S. Margenov, J. Wasniewski (Eds.), Lecture Notes in Computer Science, 9374:134–141, Springer, 2015]

T. Tsachev,
V. M. Veliov,
A. Widder: Set-membership estimations for the evolution of infectious diseases in heterogeneous populations. Research Report 2015-11 (PDF), ORCOS, TU Wien, 2015 [published in J Math Biol, (2017) 74:1081-1106]

A. Seidl, E. H. Kaplan, J. P. Caulkins, S. Wrzaczek, G. Feichtinger: Optimal Control of a Terror Queue. Research Report 2015-12 (PDF), ORCOS, TU Wien, 2015 [published in European Journal of Operational Research 2016, 248(1)246-256]

A. Seidl, A. Steindl, G. Feichtinger: Degenerated Hopf Bifurcations in a Demographic Diffusion Model. Research Report 2015-13 (PDF), ORCOS, TU Wien, 2015 [published in Grazer Mathematische Berichte (invited), 363 (2015), S. 40 – 55]

R. Cibulka, A.L. Dontchev and V.M. Veliov: Graves-type Theorems for the Sum of a Lipschitz Function and a Set-valued Mapping. Research Report 2015-14 (PDF), ORCOS, TU Wien, 2015 [published in SIAM Journal on Control and Optimization, 6 (2016), S. 3273 – 3296)

T. Templin, A. Seidl, B.A. Wickström, G. Feichtinger: Optimal language policy for the preservation of a minority language. Research Report 2015-15 (PDF), ORCOS, TU Wien, 2015  [published in Mathematical Social Sciences, Volume 81, May 2016, pp 8–21]

R. Cibulka, A. L. Dontchev, J. Preininger, T. Roubal and V. Veliov: Kantorovich-type Theorems for Generalized Equations. Research Report 2015-16 PDF), ORCOS, TU Wien, 2015 [published in  Journal of Convex Analysis, 25(2), 2018, pp 459-486]

F. El Ouardighi, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort: Autonomous and advertising-dependent “word of mouth” under costly dynamic pricing. Research Report 2015-17 (PDF), ORCOS, TU Wien, 2015  [published in European Journal of Operational Research, 2016, 251(3), pp 860-872]

F. El Ouardighi, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort: Advertising and Quality-Dependent Word-of-Mouth in a Contagion Sales Model. Research Report 2015-18 (PDF), ORCOS, TU Wien, 2015  [published in Journal of Optimization Theory and Applications, 2016, 170(1), pp 323-342]

A.O. Belyakov, V.M. Veliov: Constant versus periodic fishing: age structured optimal control approach. Research Report 2014-01 (PDF), ORCOS, TU Wien, 2014 [published in Math. Model. Nat. Phenom. 2014, 9(4)20-37, doi: 10.1051/mmnp/20149403]

A. Haider: Rational utilisation of a common resource by multiple agents. Research Report 2014-02 (PDF), ORCOS, TU Wien, 2014

B. Skritek,  V.M. Veliov: On the infinite-horizon optimal control of age-structured systems. Research Report 2014-03 (PDF), ORCOS, TU Wien, 2014 [published in  Journal of Optimization Theory and Applications,  2015, 167:243-271, DOI 10.1007/s10957-014-0680-x]

V.M. Veliov, A. Widder: Aggregation and asymptotic analysis of an SI-epidemic model for heterogeneous populations. Research Report 2014-04 (PDF), ORCOS, TU Wien, 2014 [published in Mathematical Medicine and Biology, 2015, 32:1-24, doi:10.1093/imammb/dqv018]

A. Seidl, S. Wrzaczek, F. El Ouardighi, G. Feichtinger: Keeping the Best: Optimal Career Strategies in Academia. Research Report 2014-05 (PDF), ORCOS, TU Wien, 2014 [published in Journal of Optimization Theory and Applications, 2016, 168(1)268-295]

S. Aseev, V.M. Veliov: Maximum Principle for Infinite-Horizon Optimal Control Problems under Weak Regularity Assumptions. Research Report 2014-06 (PDF), ORCOS, TU Wien, 2014 [published in Trudy Inst. Mat. i Mekh. UrO RAN, 2014, 20(3)41-57][published in Proceedings of the Steklov Institute of Mathematics, 2015, Vol. 291, Suppl. 1, pp. S22–S39. Pleiades Publishing, Ltd., 2015.]

E. Moser, D. Grass, G. Tragler: A Non-Autonomous Optimal Control Model of Renewable Energy Production under the Aspect of Fluctuating Supply and Learning by Doing. Research Report 2014-07 (PDF), ORCOS, TU Wien, 2014 [published in OR Spectrum, 2016, 38(3):545-575]

A. Widder, C. Kuehn: Heterogeneous Population Dynamics and Scaling Laws near Epidemic Outbreaks. Research Report 2014-08 (PDF), ORCOS, TU Wien, 2014 [published in Mathematical biosciences and engineering, 2016, 13(5) 1093-1118 ]

A.L. Dontchev, M.I. Krastanov, V.M. Veliov: w-limit sets for differential inclusions. Research Report 2014-09 (PDF), ORCOS, TU Wien, 2014 [published in Analysis and Geometry in Control Theory and its Applications, Springer 2015, 11:159-169, doi:10.1007/978-3-319-06917-3_6]

M. Quincampoix, V.M. Veliov: Metric Regularity and Stability of Optimal Control Problems for Linear Systems. Research Report 2013-01 (PDF), ORCOS, TU Wien, 2013 [published in SIAM J. Control Optim, 2013, 51(5), 4118-4137, DOI:10.1137/130914383]

J. Haunschmied, A. Pietrus, V.M. Veliov: The Euler Method for Linear Control Systems Revisited. Research Report 2013-02 (PDF), ORCOS, TU Wien, 2013 [published in Large-Scale Scientific Computing. 2014, 8353:90-97, DOI:10.1007/978-3-662-43880-0_9]

A. Widder: Dealing with different types of population heterogeneity in epidemiological models. Research Report 2013-03 (PDF), ORCOS, TU Wien, 2013

E. Moser, D. Grass, G. Tragler, A. Prskawetz: Optimal Control Models of Renewable Energy Production under Fluctuating Supply. Research Report 2013-04 (PDF), ORCOS, TU Wien, 2013 [published in Large-Scale Scientific Computing, 2014, 8353:133-142]

G. Feichtinger, A. Prskawetz, A. Seidl, C. Simon, S. Wrzaczek: Do Egalitarian Societies Boost Fertility? Research Report 2013-05 (PDF), ORCOS, TU Wien, 2013

J.P. Caulkins, G. Feichtinger, A. Seidl, D. Grass, R.F. Hartl, P.M. Kort: Capital stock management during a recession that freezes credit markets. Research Report 2013-06 (PDF), ORCOS, TU Wien, 2013 [published in Journal of Economic Behavior & Organization, 2015, 116(1), 1-14. doi: 10.1016/j.jebo.2015.02.023]

A.O. Belyakov, A. Davydov, V.M. Veliov: Optimal cyclic exploitation of renewable resources. Research Report 2013-07 (PDF), ORCOS, TU Wien, 2013 [published in Journal of Dynamical and Control Systems (2015) 21:475-494]

B. Skritek, T. Tsachev, V.M. Veliov: Optimality conditions and the Hamiltonian for a distributed optimal control problem on controlled domain. Research Report 2013-08 (PDF), ORCOS, TU Wien, 2013 [published in Applied Mathematics & Optimization 2014, 70(1):141-164, doi:10.1007/s00245-014-9237-5]

C. Simon: Overlapping Generations Models with Immigration. Research Report 2013-09 (PDF), ORCOS, TU Wien, 2013

F.J. Aragon Artacho, A.Belyakov, A.L. Dontchev, M.Lopez: Local convergence of quasi-Newton methods under metric regularity. Research Report 2013-10 (PDF), ORCOS, TU Wien, 2013 [published in Computational Optimization and Applications, 2014, 58(1):225-247]

A. Belyakov, J. Haunschmied, V. Veliov: General Equilibrium Model with Horizontal Innovations and Heterogeneous Products. Research Report 2012-01 (PDF), ORCOS, TU Wien, 2012 [published: Heterogeneous consumption in OLG model with horizontal innovations.  Portuguese Economic Journal, 13(3):167-193, 2014.]

T. Brechet, C. Camacho, V. Veliov: Adaptive Model-Predictive Climate Policies in a Multi-Country Setting. Research Report 2012-02 (PDF), ORCOS, TU Wien, 2012 [published in The Oxford Handbook of the Macroeconomics of Global Warming, Oxford Univ. Press, 2015, pp 114-138, doi: 10.1093/oxfordhb/9780199856978.013.0006 ]

S. Wrzaczek, P. M. Kort: Anticipation in Innovative Investment under Oligopolistic Competition. Research Report 2012-03 (PDF), ORCOS, TU Wien, 2012 [published in Automatica, 2012, 48:2812-2823]

S. Aseev, V. Veliov: Needle Variations in Infinite-Horizon Optimal Control. Research Report 2012-04 (PDF), ORCOS, TU Wien, 2012 [published in Variational and Optimal Control Problems on Unbounded Domains, Contemporary Mathematics, 619:1–17, 2014]

G. Feichtinger, A. Krasovskii, A. Prskawetz, V. Veliov: Optimal age-specific election policies in two-level organizations with fixed size. Research Report 2012-05 (PDF), ORCOS, TU Wien, 2012 [published in Central European Journal of Operations Research, 2012, 2:649-677]

A.L. Dontchev, M. Krastanov, R.T. Rockafellar, V.M. Veliov: An Euler-Newton Continuation Method for Tracking Solution Trajectories of Parametric Variational Inequalities. Research Report 2012-06 (PDF), ORCOS, TU Wien, 2012 [published in SIAM J. Control Optim, 2013, 51(3), 1823–1840]

C. Simon, B. Skritek, V.M. Veliov: Optimal immigration age-patterns in populations of fixed size. Research Report 2012-07 (PDF), ORCOS, TU Wien, 2012 [published in Journal of Mathematical Analysis and Applications, 2013,  405(1):71-89, dx.doi.org/10.1016/j.jmaa.2013.03.061]

F. Riosmena, M. Winkler-Dworak, A. Prskawetz, G. Feichtinger: The impact of policies influencing the demography of age-structured populations: lessons from academies of sciences. Research Report 2012-08 (PDF), ORCOS, TU Wien, 2012 [published in Genus: A Population Journal, 2012, 67(2):29-59]

E. Moser, A. Seidl, G. Feichtinger: History-Dependence in Production-Pollution-Trade-Off Models: A Multi-Stage Approach. Research Report 2012-09 (PDF), ORCOS, TU Wien, 2012 [published in Annals of Operations Research, 2014, 222(1):457-481, DOI 10.1007/s10479-013-1349-9]

F. Wirl, G. Feichtinger, P.M. Kort: Individual Firm and Market Dynamics of CSR Activities. Research Report 2012-10 (PDF), ORCOS, TU Wien, 2012  [published in Journal of Economic Behavior & Organization, 2013, 86:169-182]

A. Seidl: Periodic Updates Relying on Open Source Software: An Impulse Approach. Research Report 2012-11 (PDF), ORCOS, TU Wien, 2012 [published in IFAC-PapersOnLine, DOI 10.3182/20120913-4-IT-4027.00020]

D. Grass: Numerical computation of the optimal vector field: exemplified by a fishery model. Research Report 2012-12 (PDF), ORCOS, TU Wien, 2012 [published in Journal of Economic Dynamics and Control, 2012, 36(10)1626-1658]

F.J. Aragón, A.L. Dontchev, M. Gaydu, M.H. Geoffroy and V.M. Veliov: Metric Regularity of Newton´s Iteration. Research Report 2011-01 (PDF), ORCOS, TU Wien, 2011 [published in SIAM Journal on Control and Optimization, 2011, 49(2)339-362]

E. Moser, A. Prskawetz, G. Tragler: Environmental Regulations, Abatement and Economic Growth. Research Report 2011-02(PDF), ORCOS, TU Wien, 2011 [Book contribution, published in Green Growth and Sustainable Development, J. Crespo Cuaresma, T. Palokangas, A. Tarasyev (ed.); Springer Verlag Berlin-Heidelberg, Berlin Heidelberg, 2013, ISBN: 978-3642343537, 87 – 111]

G. Feichtinger, M. Kuhn, A. Prskawetz, S. Wrzaczek: The reproductive value as part of the shadow price of population. Research Report 2011-03 (PDF), ORCOS, TU Wien, 2011 [published in Demographic Research, 2011, 24(28):709-718]

M. Kuhn, S. Wrzaczek, A. Prskawetz, G. Feichtinger: Externalities in a Life-Cycle Model with Endogenous Survival. Research Report 2011-04 (PDF), ORCOS, TU Wien, 2011 [published in Journal of Mathematical Economics, 2011, 47(4-5):627-641]

J.P. Caulkins, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort, A. Novak, A. Seidl: Leading Bureaucracies to the Tipping Point: An Alternative Model of Multiple Stable Equilibrium Levels of Corruption. Research Report 2011-05 (PDF), ORCOS, TU Wien, 2011 [published in European Journal of Operational Research, 2013, 225(3)541-546]

S.M. Aseev and V.M. Veliov: Maximum Principle for Infinite-Horizon Optimal Control Problems with Dominating Discount. Research Report 2011-06 (PDF), ORCOS, TU Wien, 2011 [published in Dynamics of Continuous, Discrete and Impulsive Systems, Series B, 2012, 19:1-2]

J.P. Caulkins, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort, A. Seidl: When to Make Proprietary Software Open Source. Research Report 2011-07 (PDF), ORCOS, TU Wien, 2011   [published in Journal of Economic Dynamics and Control, 2013, 37(6):182–1194]

F. Wirl, G. Feichtinger, P.M. Kort: Individual Firm and Market Dynamics of CSR Activities. Research Report 2011-08 (PDF), ORCOS, TU Wien, 2011 [published in Journal of Economic Behavior & Organization, 2013, 86:169–182]

B. Skritek: Annuities versus Bonds – Optimal Consumption and Investment Decisions in a Continuous Life Cycle Model. Research Report 2011-09 (PDF), ORCOS, TU Wien, 2011

J.P. Caulkins, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort, A.J. Novak, A. Seidl, F. Wirl: A Dynamic Analysis of Schelling’s Binary Corruption Model: A Competitive Equilibrium Approach.&nbsp Research Report 2011-10 (PDF), ORCOS, TU Wien, 2011 [published in Journal of Optimization Theory and Applications, 2014, 161(2):608-625]

J.P. Caulkins, G. Feichtinger,  R.F. Hartl, P.M. Kort, A.J. Novak, A. Seidl: Multiple Equilibria and Skiba Points in a Rational Addiction Model. Research Report 2011-11 (PDF), ORCOS, TU Wien, 2011 [published in Central European Journal of Operations Research, 2013, 21(3):507-522,  DOI 10.1007/s10100-012-0260-9]

J.P. Caulkins, G. Feichtinger,  R.F. Hartl, P.M. Kort, A.J. Novak, A. Seidl: Long Term Implications of Drug Policy Shifts: Anticipating and Non Anticipating Consumers.  Research Report 2011-12 (PDF), ORCOS, TU Wien, 2011 [published in Annual Reviews in Control, 2013, 37(1):105-115]

A. Belyakov, G. Feichtinger, C. Simon: Minimizing the Dependency Ratio in a Population with Below-Replacement Fertility through Immigration. Research Report 2011-13 (PDF), ORCOS, TU Wien, 2011 [published in Theoretical Population Biology, 2012, 82(3):158-169]

A.L. Dontchev and V.M. Veliov: Metric Regularity under Approximations. Research Report 2010-01 (PDF), ORCOS, TU Wien, 2010 [published in Control & Cybernetics; 2009, Vol. 38/4B Issue 4, p1283-1303]

G. Feichtinger, A.J. Novak and V.M. Veliov: Applying the Leitmann-Stalford Sufficient Conditions to Maximation Control Problems with Non-Concave Hamiltonian. Research Report 2010-02 (PDF), ORCOS, TU Wien, 2010 [published in Applied Mathematics and Computation, 2010, 217(3)1017-1022]

T. Bréchet, T. Tsachev, V.M. Veliov: Markets for Emission Permits with Free Endowment: a Vintage Capital Analysis. Research Report 2010-03 (PDF), ORCOS, TU Wien, 2010 [published in Optimal Control Applications and Methods, 2012, 33(2)214-231]

T. Bréchet, C. Camacho, V.M. Veliov: Model predictive control, the economy, and the issue of global warming. Research Report 2010-04 (PDF), ORCOS, TU Wien, 2010 [published in Annals of Operations Research, 2014, 220(1):25-48]

V. M. Veliov: The Role of Information Pattern in Approximationof Control Systems. Research Report 2010-05 (PDF), ORCOS, TU Wien, 2010

I. Zeiler, J.P. Caulkins, G. Tragler: Optimal Control of Interacting Systems with DNSS Property: The Case of Illicit Drug Use. Research Report 2010-06 (PDF), ORCOS, TU Wien, 2010 [published in Journal of Economic Behavior & Organization, 2011, 78:60-73]

I. Zeiler, J.P. Caulkins, G. Tragler: When Two Become One: Optimal Control of Interacting Drug Epidemics. Research Report 2010-07 (PDF), ORCOS, TU Wien, 2010

S. Wrzaczek: Social Optimality in the Constructed-Capital Model. Research Report 2010-08 (PDF), ORCOS, TU Wien, 2010 [published  in Central European Journal of Operations Research, 2014, 22(1)211-232,  DOI 10.1007/s10100-013-0285-8]

A. Prskawetz, T. Tsachev, V.M. Veliov: Optimal education in an age-structured model under changing labor demand and supply. Research Report 2010-09 (PDF), ORCOS, TU Wien, 2010 [published in Macroeconomic Dynamics 2012, 1(2)159-183]

M. I. Krastanov and V.M. Veliov: High-order approximations to nonholonomicaffine control systems. Research Report 2010-10 (PDF), ORCOS, TU Wien, 2010 [published in Large-Scale Scientific Computations, Springer 2010, (invited), ISBN: 3-642-12534-4, pp 294-301]

T. Huschto, G. Feichtinger, R.F. Hartl, P.M. Kort, S. Sager, A. Seidl: Numerical Solution of a Conspicuous Consumption Model with Constant Control Delay. Research Report 2010-11 (PDF), ORCOS, TU Wien, 2010 [published in  Automatica, 2011, 47(9)1868-1877]

A. Belyakov, T. Tsachev, V.M. Veliov: Optimal Control of Heterogeneous Systems with Endogenous Domain of Heterogeneity. Research Report 2010-12 (PDF), ORCOS, TU Wien, 2010 [published in Applied Mathematics and Optimization, 2011, 64:287-311]

V.M. Veliov: On the Relationship Between Continuous- and Discrete-Time Control Systems. Research Report 2010-13 (PDF), ORCOS, TU Wien, 2010 [published in Central European Journal of Operations Research 2010, (invited), 18(4)511-523]

H. Dawid, E. Dockner, R.F. Hartl, J. Haunschmied, U. Leopold-Wildburger, M. Luptacik, A. Mehlmann, A. Prskawetz, M. Rauner, G. Sorger, G. Tragler, V.M. Veliov: Gustav Feichtinger Celebrates his 70-th Birthday. Research Report 2010-14 (PDF), ORCOS, TU Wien, 2010 [published in Central European Journal of Operations Research, 2010, 18(4)437-451]

E. Fortune-Devlaminckx,  J. L. Haunschmied: Diversity of Firm’s Life Cycle Adapted from the Firm’s Technology Investment Decision. Research Report 2010-15 (PDF), ORCOS, TU Wien, 2010 [published in Central European Journal of Operations Research, 2010, 18:477-489]

J.P. Caulkins, G. Feichtinger, D. Grass, R.F. Hartl, P.M. Kort, A. Seidl: Skiba points in free end time problems: the option to sell the firm. Research Report 2010-16 (PDF), ORCOS, TU Wien, 2010 [published in Journal of Economic Dynamics and Control, 2015, 51:404-419]

J.P. Caulkins, G. Feichtinger, D. Grass, G. Tragler: Optimizing counter-terror operations. Research Report 2010-17 (PDF), ORCOS, TU Wien, 2010