%0 Journal Article
%A V. A. Il'in
%A K. V. Mal'kov
%A E. I. Moiseev
%T The basis property of systems of root functions of nonselfadjoint operators, and integrability of nonlinear evolution systems that are associated with the Lax representation. I
%J Differencialʹnye uravneniâ
%D 1989
%P 1956-1970
%V 25
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_11_a17/
%G ru
%F DE_1989_25_11_a17