@article{05224617,
title = {Sharpening of Jordan's inequality and its applications.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {7},
year = {2006},
zbl = {1182.26056},
language = {en},
url = {http://dml.mathdoc.fr/item/05224617}
}
Jiang, Wei Dong; Yun, Hua. Sharpening of Jordan's inequality and its applications.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 7 (2006) . http://gdmltest.u-ga.fr/item/05224617/