@article{GDZPPN00208130X, title = {Ungleichungen f\"ur (e/a)a (b/e)b.}, journal = {Elemente der Mathematik}, volume = {40}, year = {1985}, pages = {120-123}, zbl = {0596.26014}, url = {http://dml.mathdoc.fr/item/GDZPPN00208130X} }
Alzer, Horst. Ungleichungen für (e/a)a (b/e)b.. Elemente der Mathematik, Tome 40 (1985) pp. 120-123. http://gdmltest.u-ga.fr/item/GDZPPN00208130X/