@article{1183424506, author = {Carmichael, R. D.}, title = {Additive Functions of a Point Set}, journal = {Bull. Amer. Math. Soc.}, volume = {25}, number = {3}, year = {1918}, pages = { 348-355}, language = {en}, url = {http://dml.mathdoc.fr/item/1183424506} }
Carmichael, R. D. Additive Functions of a Point Set. Bull. Amer. Math. Soc., Tome 25 (1918) no. 3, pp. 348-355. http://gdmltest.u-ga.fr/item/1183424506/