%0 Journal Article %A Chajda, Ivan %A Duda, Jaromír %T Varieties satisfying ideal equalities %J Mathematica slovaca %D 1989 %P 55-63 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1989__39_1_a8/ %G en %F MASLO_1989__39_1_a8