%0 Journal Article
%A O. A. Oleinik
%A E. V. Radkevich
%T Analyticity of solutions of linear differential equations and systems
%J Doklady Akademii Nauk
%D 1972
%P 785-788
%V 207
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_207_4_a4/
%G ru
%F DAN_1972_207_4_a4