31.	A Theory of Quality Time: The Seneca Model , International Conference on Operations Research - OR 2022 , Karlsruhe, Germany, September 6th - 9th, 2022.
30.	Accumulation and Obsolescence of Human Capital, 15th Viennese Conference on Optimal Control and Dynamic Games, Vienna, Austria, July 12th - 15th, 2022.
29.	Accumulation and Obsolescence of Human Capital, Operations Research 2019, Dresden, Germany, September 3rd - 6th, 2019.
28.	Scientific Production vs. Obsolescence of Knowledge over the Life Cycle, 30th European Conference on Operational Research (EURO 2019), Dublin, Ireland, June 23th - 27th, 2019.
27.	The Refugee Game: Blame Thy Neighbor for Terrorism, 29th European Conference on Operational Research (EURO2018), Valencia, Spain, July 8th - 11th, 2018.
26.	Optimal Intelligence in an Asymmetric Lanchester Model, EURO XXVIII, 28th European Conference on Operational Research, Poznań, Poland, July 3rd - 6th, 2016.
25.	Optimizing Counter-Insurgency Measures by Asymmetric Lanchester Models, International Conference on Operations Research OR 2015, Vienna, Austria, September 1st - 4th, 2015.
24.	Persistent Oscillations in an Asymmetric Lanchester Model when Intelligence Depends Both on Effort and the Fraction of Insurgents , 13th Viennese Workshop on Optimal Control and Dynamic Games, Vienna, Austria, May 13th - 16th, 2015.
23.	A Dynamic Extension of Schelling's Binary Corruption Model: an Alternative Approach towards Tipping Points, 3rd Conference on Business Ethics and National Behavior Patterns, St. Petersburg, Russia, June 5th - 6th, 2014.
22.	Inventory Model with Pricing and Inventory Dependent Demand, EURO XXVI/INFORMS, 26th European Conference on Operational Research, Rome, Italy, July 1st - 4th, 2013.
21.	Optimizing Counter-Terroristic Operations in an Asymmetric Lanchester Model, 15th IFAC Workshop on Control Applications of Optimization, Rimini, Italy, September 13th - 16th, 2012.
20.	An Optimal Control Extension Analysing the Effect of Intelligence in Counter-Insurgency Operations, 12th Viennese Workshop on Optimal Control, Dynamic Games and Nonlinear Dynamics, Vienna, Austria, May 30th - June 2nd, 2012.
19.	Some Extensions of Schelling's Binary Corruption Model, IFORS 2011, 19th Triennial Conference of the International Federation of Operational Research Societies, Melbourne, Australia, July 10th-15th, 2011.
18.	Happiness due to Consumption and its Increases, Wealth and Status, EURO XXIV, 24th Conference on Operational Research, Lisbon, Portugal, July 11th-14th, 2010.
17.	Applying the Leitmann-Stalford Sufficient Conditions to Maximization Control Problems with Non-Concave Hamiltonian, 11th Workshop on Optimal Control, Dynamic Games and Nonlinear Dynamics, Amsterdam, The Netherlands, May 31st - June 2nd, 2010.
16.	A Differential Game Related to Terrorism: Nash and Stackelberg Strategies, EURO XXIII, 23rd Conference on Operational Research, Bonn, Germany, July 5th-8th, 2009.
15.	A Differential Game Related to Terrorism: Nash and Stackelberg Strategies, 2nd Workshop on Dynamic Games in Management Science, Valladolid, Spain, June 29th - July 1st, 2009.
14.	Finding Optimal Tax Rates with Conflicting Social and Financial Goals, Optimal Control and Dynamic Games, Workshop in Honor of Suresh Sethi, Aix en Provence, France, June 2nd-5th, 2005.
13.	Finding Optimal Tax Rates with Conflicting Social and Financial Goals, 22nd International Conference Mathematical Methods in Economics, Brno, Czech Republic, September 15th-17th, 2004.
12.	Dynamic Pricing of a Status Symbol, 4th World Congress of Nonlinear Analysts, Orlando, Florida, USA, June 29th - July 7th, 2004.
11.	Optimal Pricing of a Product which Diffuses in Rich and Poor Populations, Workshop on Optimal Control and Dynamic Games, Tunis, Tunesia, September 26th-29th, 2002.
10.	Optimal Pricing of a Product which Diffuses in Rich and Poor Populations, International Conference on Operations Research 2002, Klagenfurt, Austria, September 2nd -5th, 2002.
9.	Improvement of Manufacturing Processes, Habilitationsvortrag, University of Vienna, Austria, October 24th, 2001.
8.	Increasing Returns and Cycles in Fishing, 7th International Conference of the Society for Computational Economics, Yale University, New Haven, Connecticut, USA, June 27th -30th, 2001.
7.	Extortion as an Obstacle to Economic Growth, 7th International Conference of the Society for Computational Economics, Yale University, New Haven, Connecticut, USA, June 27th -30th, 2001.
6.	Regulated Quality Diffusion Revisited, 7th Viennese Workshop on Optimal Control, Dynamic Games, Nonlinear Dynamics and Adaptive Systems, Vienna, Austria, May 2001.
5.	Das R&D Modell des endogenen Wachstums: Theorie und Empirie, Kolloquium zur Wirtschaftspolitik und empirischen Wirtschaftsforschung, Universität Bielefeld, Germany, 25. Mai 1998
4.	Approximation of the Distribution of Post-Model-Selection Estimators by Resampling, 5th Symposium on Nonlinear Dynamics and Econometrics (together with 23rd Annual Convention of the Eastern Economic Association), Crystal City, Virginia, USA, April 3rd-6th, 1997.
3.	Bootstrap and Model Selection: Some Preliminary Numerical Results (Poster presentation), Smoothing and Resampling in Economics, Berlin, Germany, October 4th-7th, 1995.
2.	Stable Resource-Employment Limit Cycles in an Optimally Regulated Fishery, 4th Viennese Workshop on Dynamic Economic Models and Optimal Control, Vienna, Austria, June 1991.
1.	Periodic Solutions of Open-Loop Differential Games, Bratislava University of Technology, Slovak Republic, April 2nd, 1991.