@article{05696759,
title = {Several inequalities about the number of positive divisors of a natural number },
journal = {General Mathematics},
volume = {17},
year = {2009},
pages = {65-70},
zbl = {1197.11006},
language = {en},
url = {http://dml.mathdoc.fr/item/05696759}
}
Minculete, Nicuşor; Dicu, Petrică. Several inequalities about the number of positive divisors of a natural number . General Mathematics, Tome 17 (2009) pp. 65-70. http://gdmltest.u-ga.fr/item/05696759/