Quantitative methods in economics. International conference. Quantitative methods in economics : multiple criteria decision making XIII : proceedings of the international conference : 6th-8th december 2006, Bratislava, Slovakia. Technical editor: Juraj Pekár, web editor: Martin Lukáčik. Bratislava : IURA EDITION, 2006. 199 s. Ekonómia. ISBN 80-8078-129-X.