%0 Journal Article
%A L. D. Pustyl'nikov
%T Stable and oscillating motions in nonautonomous dynamical systems. A~generalization of C.\,L.~Siegel's theorem to the nonautonomous case
%J Sbornik. Mathematics
%D 1974
%P 382-404
%V 23
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1974_23_3_a3/
%G en
%F SM_1974_23_3_a3