@article{AM2_1968__1_135968,
     author = {Marek Kuczma},
     title = {Some {Remarks} on the {Functional} {Equation} {Characterizing} the {Root.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {209--210},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135968/}
}