%0 Journal Article
%A A. A. Stakun
%T On the properties of a~differential operator with a~turning point at infinity
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1993
%P 56-63
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1993_1_a7/
%G ru
%F IVM_1993_1_a7