@article{AM2_1987__32_137196,
     author = {Hiroshi Haruki},
     title = {A new functional equation characterizing generalized {Joukowski} transformations.},
     journal = {Aequationes mathematicae},
     pages = {327--335},
     year = {1987},
     volume = {32},
     zbl = {0618.39004},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__32_137196/}
}