%0 Journal Article %A L. P. Shilnikov %T A case of the existence of a denumerable set of periodic motions %J Doklady Akademii Nauk %D 1965 %P 558-561 %V 160 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_160_3_a15/ %G ru %F DAN_1965_160_3_a15