International Conference on Statistical Distributions and Applications (ICOSDA), Mt. Pleasant, Michigan USA, 10-12 Οκτωβρίου, 2013
International Conference on Mathematical and Statistical Modeling in Honor of Enrique Castillo (ICMSM 2006), Ciudad Real, Spain, 28-30 Ιουνίου, 2006
International Conference on Characterizations, Models and Applications, Antalya, Turkey, Δεκέμβριος 2001
International Conference on Statistics in the 21st Century, Orono, Maine, USA, Ιούλιος 2000
Seminar presentations in the Mathematical Institute of the Hungarian Academy of Sciences and the Institute of Statistical Mathematics, Ιούλιος 1990
11th International Conference on Stability of Stochastic Models, Sukhumi, Soviet Union, Οκτώβριος 1987
Institute of Statistical Mathematics. Tokyo, Japan, Σεπτέμβριος 1987
Advanced Research Conference on Weighted Distributions and Related Methods for Statistical Analysis and Interpretation of Encountered Data, Observational Studies, Representativeness Issues and Related Inferences. New Delhi, India, Ιανουάριος 1986
International Conference on Mathematical Modelling and Stability of Stochastic Models, Varna, Bulgaria, Μάϊος 1985
University of Missouri-Columbia Statistics Colloquium, Μάϊος 1982
University of Iowa, Statistics Seminar, Μάρτιος 1982
University of Missouri-Columbia, Statistics Colloquium, Νοέμβριος 1981
Steklov Mathematical Institute of the Academy of Science of USSR. Moscow, USSR, Ιούνιος 1981
Department of Statistics, University of Missouri-Columbia, Statistics Colloquium, Νοέμβριος 1980
Summer School and Research Conference in Statistical Distributions in Scientific Work, Trieste, Italy, Ιούλιος 1980
Department of Statistics, University of Dublin, Trinity College, Seminar Series, Μάρτιος 1980
Seminar presentations, Ioannina, Απρίλιος 1979
Seminar presentations, Department of Mathematics, University of Athens, Μάρτιος 1978
59th World Statistics Congress of the International Statistical Institute, Hong Kong, August, 2013
57th session of the International Statistical Institute, Durban, South Africa, August, 2009
Τhe 2008 annual meeting of the American Political Science Association, Boston, August 2008
Hawaii International Conference on Social Science, Hawaii, May-June 2007
7th Annual Hawaii International Conference on Business, Hawaii, May 2007
25th European Meeting of Statisticians, Oslo, Norway, July 2005
Joint Statistical Meetings of the American Statistical Association, The Institute of Mathematical Statistics, The Canadian Statistical Society. San Francisco, Αύγουστος 2003
Joint Statistical Meetings of the American Statistical Association, The Institute of Mathematical Statistics, The Canadian Statistical Society. New York, Αύγουστος 2002
5th Hellenic European Conference on Computer Mathematics and its Applications, Athens, Greece, Σεπτέμβριος 2001
SESS-TIES ’99 International Conference, “Envirometrics and Statistics in the Earth and Space Sciences”, Athens, Greece, Αύγουστος 1999
4th Hellenic European Conference on Computer Mathematics and its Applications, Athens, Greece, Σεπτέμβριος 1998
13th International Workshop on Statistical Modelling, New Orleans, USA, Ιούλιος 1998
International Environmetrics Conference, Burlington, Ontario, Canada, Αύγουστος 1994
American Statistical Association Winter Conference, Atlanta, Georgia, Ιανουάριος 1994
International Conference of the International Association for Statistical Education, Perugia, Italy, Σεπτέμβριος 1993
49th Session of the International Statistical Institute, Firenze, Italy, Σεπτέμβριος 1993
American Statistical Association Winter Conference, Forte Lauderdale, Florida, Ιανουάριος 1993
20th European Meeting of Statisticians, Bath, England, Σεπτέμβριος 1992
Annual Conference of the Royal Statistical Society, Sheffield, England, Σεπτέμβριος 1992
Annual Meeting on Making Statistics More Effective in Business Schools, University of Tennessee, Knoxville, Tennessee, Ιούνιος 1992
48th Session of the International Statistical Institute, Cairo, Egypt, Σεπτέμβριος 1991
First International Symposium on Uncertainty Modeling and Analysis, Maryland, USA, Δεκέμβριος 1990
2nd World Congress of the Bernoulli Society and 53rd Annual Meeting of the Institute of Mathematical Statistics, Uppsala, Sweden, Αύγουστος 1990
XVth International Biometric Conference, Budapest, Hungary, Ιούλιος 1990
First World Conference on Computational Statistics and Data Analysis, Shizuoka, Japan, Σεπτέμβριος 1987
46th Session of the International Statistical Institute, Tokyo, Japan, Σεπτέμβριος 1987
17th European Meeting of Statisticians, Thessaloniki, Greece, Αύγουστος 1987
1st International Conference on Fibonacci Numbers and their Applications, Patras, Greece, Αύγουστος 1984
7th Balkan Congress of Mathematicians, Athens, Greece, Δεκέμβριος 1983
The 1982 Spring Meeting (179th Meeting) of the Institute of Mathematical Statistics and the Biometric Society, San Antonio, Texas, USA, Μάρτιος 1982
The 1981 Annual Meeting of the American Statistical Association and the Biometric Society, Detroit, Michigan, USA, Αύγουστος 1981
The 1981 Annual Meeting (177th Meeting) of the Institute of Mathematical Statistics, Vail, Colorado, USA, Αύγουστος 1981
Stochastic Modeling Conference, Dublin, Ireland, Μάϊος 1980. (Organized by the Department of Statistics, Trinity College, University of Dublin)
42nd Session on the International Statistical Institute, Manila, Philippines, Δεκέμβριος 1979 (Organized by the International Statistical Institute)
6th Conference on Probability Theory, Brasov, Romania, Σεπτέμβριος 1979. (Organized by the Centre of Mathematical Statistics of Bucharest and the Romanian Academy)
Colloquium on Analytic Function Methods in Probability Theory, Debrecen, Hungary, Σεπτέμβριος 1977. (Organized by the Bolyai Janos Mathematical Society of Hungary)
10th European Meeting of Statisticians, Leuven, Belgium, Αύγουστος 1977. (Organized by the Bernoulli Society for Probability and Mathematical Statistics)
International Conference on Mathematical, Computational and Statistical Sciences, and Engineering, Lucerne, Switzerland, October, 2012
The 2009 meeting of the Swiss Society of Economics and Statistics (SSES), Geneva, Switzerland, June 2009
GLLAMM, Generalized Linear Latent And Mixed Models meeting, Lausanne, Switzerland, June 2007