%0 Journal Article
%A S. R. Umarov
%T Nonlocal boundary value problems for pseudodifferential and operator-differential equations.~II
%J Differencialʹnye uravneniâ
%D 1998
%P 375-382
%V 34
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1998_34_3_a12/
%G ru
%F DE_1998_34_3_a12