%0 Journal Article %A Chajda, Ivan %T Directly decomposable congruences in varieties with nullary operations %J Mathematica slovaca %D 1987 %P 31-35 %V 37 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1987__37_1_a2/ %G en %F MASLO_1987__37_1_a2