%0 Journal Article %A Duda, Jaromír %T Varieties having directly decomposable congruence classes %J Časopis pro pěstování matematiky %D 1986 %P 394-403 %V 111 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1986.118287/ %R 10.21136/CPM.1986.118287 %G en %F 10_21136_CPM_1986_118287