@article{bwmeta1.element.bwnjournal-article-apmv8i1p13bwm,
author = {Go\l \k ab, Stanis\l aw and Pli\'s, A.},
title = {On the notion of gradient. III. Gradient as a limit value of a surface integral},
journal = {Annales Polonici Mathematici},
volume = {8},
year = {1960},
pages = {13-22},
zbl = {0092.14204},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv8i1p13bwm}
}
Gołąb, Stanisław; Pliś, A. On the notion of gradient. III. Gradient as a limit value of a surface integral. Annales Polonici Mathematici, Tome 8 (1960) pp. 13-22. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv8i1p13bwm/