%0 Journal Article
%A V. Zh. Dumanyan
%T On compactness of a class of first order linear differential operators
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 2011
%P 17-21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_2011_2_a2/
%G en
%F UZERU_2011_2_a2