TY - JOUR AU - Riečan, Beloslav TI - On some contributions to quantum structures by fuzzy sets JO - Kybernetika PY - 2007 SP - 481 EP - 490 VL - 43 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_2007__43_4_a8/ LA - en ID - KYB_2007__43_4_a8 ER -