@article{03953549, title = {Essential supremum norm differentiability.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {8}, year = {1985}, pages = {433-439}, doi = {10.1155/S0161171285000473}, zbl = {0593.46016}, language = {en}, url = {http://dml.mathdoc.fr/item/03953549} }
Leonard, I.E.; Taylor, K.F. Essential supremum norm differentiability.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 433-439. doi : 10.1155/S0161171285000473. http://gdmltest.u-ga.fr/item/03953549/