@article{04152758, title = {An inequality of W.L. Wang and P.F. Wang.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {13}, year = {1990}, pages = {295-298}, doi = {10.1155/S0161171290000436}, zbl = {0703.26017}, language = {en}, url = {http://dml.mathdoc.fr/item/04152758} }
Alzer, Horst. An inequality of W.L. Wang and P.F. Wang.. International Journal of Mathematics and Mathematical Sciences, Tome 13 (1990) pp. 295-298. doi : 10.1155/S0161171290000436. http://gdmltest.u-ga.fr/item/04152758/