%0 Journal Article
%A A. A. Martynyuk
%T On some applications of the contraction principle
%J Doklady Akademii Nauk
%D 1994
%P 304-306
%V 339
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1994_339_3_a3/
%G ru
%F DAN_1994_339_3_a3