@article{AM2_1971__6_136180,
     author = {ZOLT\'AN DAR\'OCZY},
     title = {On the {General} {Solution} of the {Functional} {Equation} f(x + y},
     journal = {Aequationes mathematicae},
     pages = {130--132},
     publisher = {mathdoc},
     volume = {6},
     year = {1971},
     zbl = {0222.39003},
     url = {http://geodesic.mathdoc.fr/item/AM2_1971__6_136180/}
}