@article{1183487064,
author = {Bell, E. T.},
title = {A ray of numerical functions of $r$ arguments},
journal = {Bull. Amer. Math. Soc.},
volume = {32},
number = {5},
year = {1926},
pages = { 341-345},
language = {en},
url = {http://dml.mathdoc.fr/item/1183487064}
}
Bell, E. T. A ray of numerical functions of $r$ arguments. Bull. Amer. Math. Soc., Tome 32 (1926) no. 5, pp. 341-345. http://gdmltest.u-ga.fr/item/1183487064/