%0 Journal Article %A S. Patnaik %T Fixed points of multiple-valued transformations %J Fundamenta Mathematicae %D 1969 %P 345-349 %V 65 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-65-3-345-349/ %R 10.4064/fm-65-3-345-349 %G en %F 10_4064_fm_65_3_345_349