@article{bwmeta1.element.bwnjournal-article-fmv22i1p18bwm,
author = {Fr\'ed\'eric Riesz},
title = {Sur les points de densit\'e au sens fort},
journal = {Fundamenta Mathematicae},
volume = {23},
year = {1934},
pages = {221-225},
zbl = {0009.20802},
language = {fra},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv22i1p18bwm}
}
Riesz, Frédéric. Sur les points de densité au sens fort. Fundamenta Mathematicae, Tome 23 (1934) pp. 221-225. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv22i1p18bwm/