%0 Journal Article %A Riečan, Beloslav %T On some contributions to quantum structures by fuzzy sets %J Kybernetika %D 2007 %P 481-490 %V 43 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2007__43_4_a8/ %G en %F KYB_2007__43_4_a8