%0 Journal Article
%A Kh. Kh. Murtazin
%A A. M. Popova
%A V. A. Sadovnichy
%T A condition for the existence of the discrete spectrum of the energy operator of a system of two particles in an external field
%J Differencialʹnye uravneniâ
%D 1986
%P 717-719
%V 22
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_4_a24/
%G ru
%F DE_1986_22_4_a24