%0 Journal Article %A M. I. Kargapolov %A V. A. Churkin %T Varieties of solvable groups %J Algebra i logika %D 1971 %P 651-657 %V 10 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1971_10_6_a2/ %G ru %F AL_1971_10_6_a2