%0 Journal Article
%A A. K. Gushchin
%A V. P. Mikhailov
%T The Fredholmness of a class of nonlocal problems for a
%J Doklady Akademii Nauk
%D 1993
%P 290-292
%V 333
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_333_3_a4/
%G ru
%F DAN_1993_333_3_a4