%0 Journal Article
%A V. N. Pivnenko
%T Spectral theory of the operator $-\Delta u+Ku$ in an unbounded space, where $K$ is a bounded Hermitian operator
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1963
%P 122-134
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1963_3_a17/
%G ru
%F IVM_1963_3_a17