%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 8 %N 2 %U http://geodesic.mathdoc.fr/item/CMUC_1967_8_2_a12/ %G en %F CMUC_1967_8_2_a12