@article{IM_1968__5_141925,
     author = {W. HANSEN},
     title = {Charakterisierung von {Familien} exzessiver {Funktionen.}},
     journal = {Inventiones mathematicae},
     pages = {335--348},
     publisher = {mathdoc},
     volume = {5},
     year = {1968},
     zbl = {0157.19003},
     url = {http://geodesic.mathdoc.fr/item/IM_1968__5_141925/}
}