%0 Journal Article %A Draškovičová, Hilda %T Permutability, Distributivity of Equivalence Relations and Direct Products %J Mathematica slovaca %D 1973 %P 69-87 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1973__23_1_a10/ %G en %F MASLO_1973__23_1_a10