@article{105685, author = {Josef Dane\v s and Ji\v r\'\i\ Durdil}, title = {A note on geometric characterization of Fr\'echet differentiability}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {017}, year = {1976}, pages = {195-204}, zbl = {0321.58009}, mrnumber = {0415663}, language = {en}, url = {http://dml.mathdoc.fr/item/105685} }
Daneš, Josef; Durdil, Jiří. A note on geometric characterization of Fréchet differentiability. Commentationes Mathematicae Universitatis Carolinae, Tome 017 (1976) pp. 195-204. http://gdmltest.u-ga.fr/item/105685/
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