%0 Journal Article %A S. Zhang %A C.A. Vachuska %T Varieties of completely regular semigroups generated by Mal'cev products. %J Semigroup forum %D 1994 %P 175-194 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1994__49_2_135346/ %F SF_1994__49_2_135346