@article{AM2_1987__32_137185,
     author = {Janusz Walorski},
     title = {On a functional inequality.},
     journal = {Aequationes mathematicae},
     pages = {213--215},
     publisher = {mathdoc},
     volume = {32},
     year = {1987},
     zbl = {0625.39012},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__32_137185/}
}