%0 Journal Article %A Chajda, Ivan %T Semiregularity of congruences implies congruence modularity at 0 %J Czechoslovak Mathematical Journal %D 2002 %P 333-336 %V 52 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2002__52_2_a8/ %G en %F CMJ_2002__52_2_a8