%0 Journal Article %A Himmelberg, Charles J. %A Van Vleck, F. S. %T An extension of Brunovský's Scorza-Dragoni type theorem for unbounded set-valued functions %J Mathematica slovaca %D 1976 %P 47-52 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1976__26_1_a5/ %G en %F MASLO_1976__26_1_a5