%0 Journal Article
%A V. D. Koshmanenko
%T Uniqueness of a singularly perturbed operator
%J Doklady Akademii Nauk
%D 1988
%P 786-789
%V 300
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a2/
%G ru
%F DAN_1988_300_4_a2