%0 Journal Article %A I. I. Blehman %T On the stability of periodical solutions of quasilinear autonomous systems with many degrees of freedom %J Doklady Akademii Nauk %D 1957 %P 183-186 %V 112 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_112_2_a0/ %G ru %F DAN_1957_112_2_a0