%0 Journal Article %A Baladová, Libuše %T Number of alternatives in reducing finite spaces and vector spaces %J Kybernetika %D 1974 %P -454 %V 10 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1974__10_5_a5/ %G en %F KYB_1974__10_5_a5