%0 Journal Article %A D. N. Azarov %T On the residual nilpotence of free products of free groups with cyclic amalgamation %J Matematičeskie zametki %D 1998 %P 3-8 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1998_64_1_a0/ %G ru %F MZM_1998_64_1_a0