%0 Journal Article %A V. P. Burichenko %T Nonsplit extensions of Abelian $p$-groups by $L_2(p^n)$ and general theorems on extensions of finite groups %J Matematičeskie trudy %D 2014 %P 19-69 %V 17 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MT_2014_17_1_a1/ %G ru %F MT_2014_17_1_a1