%0 Journal Article
%A V. M. Bruk
%T On the spectrum of differential operators in a~space of vector functions
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1989
%P 15-21
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1989_8_a1/
%G ru
%F IVM_1989_8_a1