%0 Journal Article
%A A. I. Vahabov
%T Double expansion in Fourier series in principal functions of a~nonselfadjoint elliptic operator
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1982
%P 8-13
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1982_3_a1/
%G ru
%F IVM_1982_3_a1