Aastaraamat 1999 / Eesti Matemaatika Selts
2001
http://www.ester.ee/record=b1226018*est
5th International Conference on Optimal [i.e. Operational] Research "Simulation and Optimization in Business and Industry" : May 17-20, 2006, Tallinn, Estonia : programme and abstracts
2006
http://www.ester.ee/record=b2146103*est