%0 Journal Article
%A P. E. Sobolevskii
%T Approximate methods of solving differential equations in Banach space
%J Doklady Akademii Nauk
%D 1957
%P 240-243
%V 115
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_115_2_a10/
%G ru
%F DAN_1957_115_2_a10