@article{1077476560,
author = {Mandelbrojt, S. and Brunk, H. D.},
title = {A composition theorem for asymptotic series},
journal = {Duke Math. J.},
volume = {18},
number = {1},
year = {1951},
pages = { 297-306},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476560}
}
Mandelbrojt, S.; Brunk, H. D. A composition theorem for asymptotic series. Duke Math. J., Tome 18 (1951) no. 1, pp. 297-306. http://gdmltest.u-ga.fr/item/1077476560/