%0 Journal Article
%A M. S. Agranovich
%T Series in the root vectors of operators that are very close to being self-adjoint
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1977
%P 65-67
%V 11
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1977_11_4_a6/
%G ru
%F FAA_1977_11_4_a6