@article{bwmeta1.element.bwnjournal-article-cmv8i1p81bwm,
author = {R. Boas},
title = {Differentiability of jump functions},
journal = {Colloquium Mathematicae},
volume = {8},
year = {1961},
pages = {81-82},
zbl = {0192.14803},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-cmv8i1p81bwm}
}
Boas, R. Differentiability of jump functions. Colloquium Mathematicae, Tome 8 (1961) pp. 81-82. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-cmv8i1p81bwm/