@article{05019220, title = {Notes on double inequalities of Mathieu's series.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2005}, year = {2005}, pages = {2547-2554}, doi = {10.1155/IJMMS.2005.2547}, zbl = {1086.26015}, language = {en}, url = {http://dml.mathdoc.fr/item/05019220} }
Qi, Feng; Chen, Chao-Ping; Guo, Bai-Ni. Notes on double inequalities of Mathieu's series.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 2547-2554. doi : 10.1155/IJMMS.2005.2547. http://gdmltest.u-ga.fr/item/05019220/