%0 Journal Article %A Kolomý, Josef %T On the differentiability of mappings in functional spaces %J Commentationes Mathematicae Universitatis Carolinae %D 1967 %P 315-329 %V 08 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1967__8_2_a12/ %G en %F CMUC_1967__8_2_a12