%0 Journal Article %A A. L. Shmel'kin %T The lower central series of a free product of groups %J Algebra i logika %D 1969 %P 129-137 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1969_8_1_a6/ %G ru %F AL_1969_8_1_a6