%0 Journal Article
%A V. A. Il'in
%A A. S. Il'inskii
%T Conference ``Problems of Mathematical Physics and Adjacent Problems of Calculus Mathematics and Theory of Differential Equations''
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1977
%V 32
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1977_32_2_a24/
%G ru
%F RM_1977_32_2_a24