@article{AM2_1977__16_136696,
     author = {R. Goldstein},
     title = {On meromorphic solutions of a functional equation of {Kuczma} and {Smajdor.}},
     journal = {Aequationes mathematicae},
     pages = {221--244},
     publisher = {mathdoc},
     volume = {16},
     year = {1977},
     zbl = {0372.30005},
     url = {http://geodesic.mathdoc.fr/item/AM2_1977__16_136696/}
}