international conference
2009 - MME 2009
2006 - MME 2006
2005 - WEHIA 2005
2004 - New 2004, Salerno, Italy
2004 - QUANTITATIVE METHODS IN ECONOMICS (MULTIPLE CRITERIA DECISION MAKING XII)
2002 - Mathematical Methods in Economics, MME 2002 3-5. 9. 2002 Ostrava
2002 - Quantitative methods in economics, Nitra, Slovensko, 5-7.12.2002
international workshop
2006 - ESHIA 2006