@article{1028997951,
author = {Kazarinoff, Nicholas D.},
title = {Asymptotic solutions with respect to a parameter of ordinary differential equations having a regular singular point.},
journal = {Michigan Math. J.},
volume = {4},
number = {2},
year = {1957},
pages = { 207-220},
language = {en},
url = {http://dml.mathdoc.fr/item/1028997951}
}
Kazarinoff, Nicholas D. Asymptotic solutions with respect to a parameter of ordinary differential equations having a regular singular point.. Michigan Math. J., Tome 4 (1957) no. 2, pp. 207-220. http://gdmltest.u-ga.fr/item/1028997951/