@article{GDZPPN002401142,
title = {On the Existence Almost Everywhere of the Cross Partial Derivatives.},
journal = {Mathematische Zeitschrift},
volume = {99},
year = {1967},
pages = {171-176},
zbl = {0153.08802},
url = {http://dml.mathdoc.fr/item/GDZPPN002401142}
}
Tucker, D.H.; Easton, R.J.; Wayment, S. On the Existence Almost Everywhere of the Cross Partial Derivatives.. Mathematische Zeitschrift, Tome 99 (1967) pp. 171-176. http://gdmltest.u-ga.fr/item/GDZPPN002401142/