@article{1092403787,
author = {\v Silhav\'y, Miroslav},
title = {Differentiability properties of isotropic functions},
journal = {Duke Math. J.},
volume = {104},
number = {1},
year = {2000},
pages = { 367-373},
language = {en},
url = {http://dml.mathdoc.fr/item/1092403787}
}
Šilhavý, Miroslav. Differentiability properties of isotropic functions. Duke Math. J., Tome 104 (2000) no. 1, pp. 367-373. http://gdmltest.u-ga.fr/item/1092403787/