@article{1255958687,
author = {YAMAZAWA, Hiroshi},
title = {Formal Gevrey Class of Formal Power Series Solution for Singular First Order Linear Partial Differential Operators},
journal = {Tokyo J. of Math.},
volume = {23},
number = {2},
year = {2000},
pages = { 537-561},
language = {en},
url = {http://dml.mathdoc.fr/item/1255958687}
}
YAMAZAWA, Hiroshi. Formal Gevrey Class of Formal Power Series Solution for Singular First Order Linear Partial Differential Operators. Tokyo J. of Math., Tome 23 (2000) no. 2, pp. 537-561. http://gdmltest.u-ga.fr/item/1255958687/