%0 Journal Article %A T. V. Dubrovina %T Soluble class~3 varieties of $A$-groups %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1983 %P 139 %V 38 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1983_38_5_a8/ %G en %F RM_1983_38_5_a8