%0 Journal Article
%A R. R. Ashurov
%T Bi-orthogonal expansions of a nonselfadjoint Schr\"odinger operator
%J Differencialʹnye uravneniâ
%D 1991
%P 156-158
%V 27
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1991_27_1_a17/
%G ru
%F DE_1991_27_1_a17