%0 Journal Article %A Duda, Jaromír %T Congruences on products in varieties satisfying the CEP %J Mathematica slovaca %D 1986 %P 171-177 %V 36 %N 2 %U http://geodesic.mathdoc.fr/item/MASLO_1986_36_2_a9/ %G en %F MASLO_1986_36_2_a9