%0 Journal Article %A M. V. Tsybanev %T An abelian normal subgroup whose subgroups are all %J Algebra i logika %D 1974 %P 77-87 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1974_13_1_a6/ %G ru %F AL_1974_13_1_a6