%0 Journal Article %A S. I. Adian %T On algorithmic problems in effectively complete classes of groups %J Doklady Akademii Nauk %D 1958 %P 13-16 %V 123 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_123_1_a1/ %G ru %F DAN_1958_123_1_a1