%0 Journal Article
%A V. I. Vasyunin
%T Multiplicity of a spectrum of contractions with finite defect
%J Doklady Akademii Nauk
%D 1989
%P 1041-1043
%V 304
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_304_5_a2/
%G ru
%F DAN_1989_304_5_a2