@article{AM2_1988__36_2-3_137290,
     author = {Dennis C. Russell},
     title = {A note on {Mathieu's} inequality.},
     journal = {Aequationes mathematicae},
     pages = {294--302},
     publisher = {mathdoc},
     volume = {36},
     number = {2-3},
     year = {1988},
     zbl = {0671.26010},
     url = {http://geodesic.mathdoc.fr/item/AM2_1988__36_2-3_137290/}
}