%0 Journal Article %A Hosein Ansari %T Degenerate differential-operator equations on infinite interval %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2011 %P 27-32 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2011_2_a4/ %G en %F UZERU_2011_2_a4