@article{05224739,
title = {A method for establishing certain trigonometric inequalities.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {8},
year = {2007},
zbl = {1132.51009},
language = {en},
url = {http://dml.mathdoc.fr/item/05224739}
}
Hajja, Mowaffaq. A method for establishing certain trigonometric inequalities.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05224739/