%0 Journal Article %A Fernando Cobos %T On a theorem of Ky Fan %J Colloquium Mathematicum %D 1987 %P 249-251 %V 55 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-55-2-249-251/ %R 10.4064/cm-55-2-249-251 %G en %F 10_4064_cm_55_2_249_251