@article{AM2_1985__28_137046,
     author = {S.L. Segal},
     title = {On {Nathanson's} functional equation.},
     journal = {Aequationes mathematicae},
     pages = {114--123},
     publisher = {mathdoc},
     volume = {28},
     year = {1985},
     zbl = {0561.39001},
     url = {http://geodesic.mathdoc.fr/item/AM2_1985__28_137046/}
}