@article{bwmeta1.element.bwnjournal-article-fmv114i1p6bwm,
author = {Giuseppina Russo and Santi Valenti},
title = {On the k-pseudo-symmetrical approximate differentiability},
journal = {Fundamenta Mathematicae},
volume = {112},
year = {1981},
pages = {79-83},
zbl = {0493.26008},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv114i1p6bwm}
}
Russo, Giuseppina; Valenti, Santi. On the k-pseudo-symmetrical approximate differentiability. Fundamenta Mathematicae, Tome 112 (1981) pp. 79-83. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv114i1p6bwm/