@article{1183510992,
author = {Dunford, Nelson and Hille, Einar},
title = {The differentiability and uniqueness of continuous solutions of addition formulas},
journal = {Bull. Amer. Math. Soc.},
volume = {53},
number = {12},
year = {1947},
pages = { 799-805},
language = {en},
url = {http://dml.mathdoc.fr/item/1183510992}
}
Dunford, Nelson; Hille, Einar. The differentiability and uniqueness of continuous solutions of addition formulas. Bull. Amer. Math. Soc., Tome 53 (1947) no. 12, pp. 799-805. http://gdmltest.u-ga.fr/item/1183510992/