%0 Journal Article
%A M. L. Katkov
%T Generalization of istratescu's theorem on contractive mappings in metric spaces
%J Zapiski Nauchnykh Seminarov POMI
%D 1979
%P 73-82
%V 83
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1979_83_a3/
%G ru
%F ZNSL_1979_83_a3