%0 Journal Article
%A M. G. Krein
%T A new application of the fixed-point principle in the theory of operators in a space with indefinite metric
%J Doklady Akademii Nauk
%D 1964
%P 1023-1026
%V 154
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_154_5_a4/
%G ru
%F DAN_1964_154_5_a4