%0 Journal Article
%A G. Isac
%T A Fixed Point Theorem. Application to Ershov's Optimization Problem (in French)
%J Mathematica balkanica
%D 1987
%P 33
%V 1
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MABA_1987_1_1_a3/
%F MABA_1987_1_1_a3