%0 Journal Article
%A V. A. Khatskevich
%T Invariant subspaces and properties of the spectra of plus-operators with a quasifocusing power in a Krein space
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1984
%P 86-87
%V 18
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a21/
%G ru
%F FAA_1984_18_1_a21