%0 Journal Article
%A L. D. Pustyl'nikov
%T A~generalization of two theorems of C.\,L.~Siegel to the nonautonomous case
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1971
%V 26
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1971_26_4_a16/
%G ru
%F RM_1971_26_4_a16