%0 Journal Article
%A Lee, Cheng Ming
%T An existence theorem via an intuitive idea and fixed-point theorems
%J Commentationes Mathematicae Universitatis Carolinae
%D 1978
%P 715-725
%V 19
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1978__19_4_a8/
%G en
%F CMUC_1978__19_4_a8