%0 Journal Article %A R. P. Ignat'eva %T Theorems on the existence and inclusion of subgroups in a finite group %J Doklady Akademii Nauk %D 1960 %P 33-35 %V 134 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_134_1_a7/ %G ru %F DAN_1960_134_1_a7