@article{05224791,
title = {Proving inequalities in acute triangle with difference substitution.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {8},
year = {2007},
zbl = {1197.26042},
language = {en},
url = {http://dml.mathdoc.fr/item/05224791}
}
Wu, Yudong; Zhang, Zhihua; Zhang, Yurui. Proving inequalities in acute triangle with difference substitution.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05224791/