@article{1183498687,
author = {Perkins, F. W.},
title = {A set of independent conditions that a real function be everywhere differentiable},
journal = {Bull. Amer. Math. Soc.},
volume = {42},
number = {12},
year = {1936},
pages = { 93-98},
language = {en},
url = {http://dml.mathdoc.fr/item/1183498687}
}
Perkins, F. W. A set of independent conditions that a real function be everywhere differentiable. Bull. Amer. Math. Soc., Tome 42 (1936) no. 12, pp. 93-98. http://gdmltest.u-ga.fr/item/1183498687/