@article{bwmeta1.element.bwnjournal-article-cmv7i1p167bwm,
author = {P. Erd\"os},
title = {About an estimation problem of Zahorski},
journal = {Colloquium Mathematicae},
volume = {7},
year = {1960},
pages = {167-170},
zbl = {0106.27701},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-cmv7i1p167bwm}
}
Erdös, P. About an estimation problem of Zahorski. Colloquium Mathematicae, Tome 7 (1960) pp. 167-170. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-cmv7i1p167bwm/