%0 Journal Article %A J. Bryszewski %A Lech Górniewicz %T Multi-valued maps of subsets of Euclidean spaces %J Fundamenta Mathematicae %D 1975 %P 233-251 %V 90 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-90-3-233-251/ %R 10.4064/fm-90-3-233-251 %G en %F 10_4064_fm_90_3_233_251