%0 Journal Article
%A M. M. Dvorin
%A V. F. Lazutkin
%T The existence of an infinite number of elliptic and hyperbolic periodic trajectories for a convex billiard
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1973
%P 20-27
%V 7
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1973_7_2_a3/
%G ru
%F FAA_1973_7_2_a3