@article{1183503237,
author = {Hall, Newman A.},
title = {A formal expansion theory for functions of one or more variables},
journal = {Bull. Amer. Math. Soc.},
volume = {46},
number = {11},
year = {1940},
pages = { 824-832},
language = {en},
url = {http://dml.mathdoc.fr/item/1183503237}
}
Hall, Newman A. A formal expansion theory for functions of one or more variables. Bull. Amer. Math. Soc., Tome 46 (1940) no. 11, pp. 824-832. http://gdmltest.u-ga.fr/item/1183503237/