%0 Journal Article
%A V. P. Orlov
%T Higher order singularly degenerate differential operators with unbounded operator coefficients
%J Differencialʹnye uravneniâ
%D 1976
%P 272-280
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_2_a9/
%G ru
%F DE_1976_12_2_a9