%0 Journal Article
%A P. I. Koval'
%T On the asymptotic behaviour of solutions of linear difference equations and linear differential equations
%J Doklady Akademii Nauk
%D 1957
%P 949-952
%V 114
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_114_5_a8/
%G ru
%F DAN_1957_114_5_a8