%0 Journal Article
%A V. G. Limanskii
%T On differential-operator equations of second order
%J Izvestiya. Mathematics 
%D 1975
%P 1241-1277
%V 9
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1975_9_6_a5/
%G en
%F IM2_1975_9_6_a5