@article{1270216084,
author = {URYU, Hitoshi},
title = {The Cauchy Problem for Weakly Hyperbolic Equations (II);
Infinite Degenerate Case},
journal = {Tokyo J. of Math.},
volume = {03},
number = {1},
year = {1980},
pages = { 99-113},
language = {en},
url = {http://dml.mathdoc.fr/item/1270216084}
}
URYU, Hitoshi. The Cauchy Problem for Weakly Hyperbolic Equations (II);
Infinite Degenerate Case. Tokyo J. of Math., Tome 03 (1980) no. 1, pp. 99-113. http://gdmltest.u-ga.fr/item/1270216084/