@article{AM2_1976__14_136615,
     author = {R. Goldstein},
     title = {On meromorphic solutions of a functional equation. {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {507--508},
     publisher = {mathdoc},
     volume = {14},
     year = {1976},
     url = {http://geodesic.mathdoc.fr/item/AM2_1976__14_136615/}
}