@article{02107567,
title = {A two-sided estimate of },
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {5},
year = {2004},
zbl = {1056.26011},
language = {en},
url = {http://dml.mathdoc.fr/item/02107567}
}
Niculescu, Constantin P.; Vernescu, Andrei. A two-sided estimate of . JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 5 (2004) . http://gdmltest.u-ga.fr/item/02107567/