%0 Journal Article %A Do Long Van %T On the word and conjugacy problems for some classes of finitely presented groups %J Doklady Akademii Nauk %D 1978 %P 1005-1008 %V 241 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_241_5_a1/ %G ru %F DAN_1978_241_5_a1