@article{AM2_1971__6_136165,
     author = {HIROSHI HARUKI},
     title = {On an {Application} of the {'Square'} {Functional} {Equation} to a {Geometrie} {Characterization}  of {Quadratic}  {Functions} from the {Standpoint} of {Conformal-Mapping} {Properties}},
     journal = {Aequationes mathematicae},
     pages = {36--38},
     publisher = {mathdoc},
     volume = {6},
     year = {1971},
     zbl = {0214.39201},
     url = {http://geodesic.mathdoc.fr/item/AM2_1971__6_136165/}
}