@article{AM2_1976__14_136614,
     author = {Halina Swiatak},
     title = {On alternative functional equations. {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {507--507},
     publisher = {mathdoc},
     volume = {14},
     year = {1976},
     zbl = {0333.39004},
     url = {http://geodesic.mathdoc.fr/item/AM2_1976__14_136614/}
}