%0 Journal Article %A John, Kamil %A Zizler, Václav E. %T A note on strong differentiability spaces %J Commentationes Mathematicae Universitatis Carolinae %D 1976 %P 127-134 %V 17 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1976__17_1_a10/ %G en %F CMUC_1976__17_1_a10