@InProceedings{,
 author = {P. Sevastsyanau, M. Jończyk},
 booktitle = {Proceedings of Int. Conf. on Fuzzy Sets and Soft Computing in Economics and Finance},
 title = {Comparative study of aggregation methods in bicriterial fuzzy portfolio selection},
 pages = {484--492},
 year = {2004},
 address = {St. Petersburg, Russia}
 }