@article{1250522320,
author = {Igari, Katsuju},
title = {Cauchy problem for weakly hyperbolic equations of second order},
journal = {J. Math. Kyoto Univ.},
volume = {20},
number = {4},
year = {1980},
pages = { 43-55},
language = {en},
url = {http://dml.mathdoc.fr/item/1250522320}
}
Igari, Katsuju. Cauchy problem for weakly hyperbolic equations of second order. J. Math. Kyoto Univ., Tome 20 (1980) no. 4, pp. 43-55. http://gdmltest.u-ga.fr/item/1250522320/