%0 Journal Article
%A L. P. Tepoyan
%A H. S. Grigoryan
%T On degenerate nonself-adjoint differential equations of fourth order
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 2012
%P 29-33
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_2012_3_a5/
%G en
%F UZERU_2012_3_a5