@article{AM2_1992__43_1_137448,
     author = {Janusz Matkowski},
     title = {On a {?-Wright} convexity and the converse of {Minkowsi's} inequality.},
     journal = {Aequationes mathematicae},
     pages = {106--112},
     year = {1992},
     volume = {43},
     number = {1},
     zbl = {0758.26008},
     url = {http://geodesic.mathdoc.fr/item/AM2_1992__43_1_137448/}
}