@article{GDZPPN002327368,
title = {A Fundamental Property of Monge Characteristics in Involutive Systems of Non-Linear Partial Differential Equations and its Application.},
journal = {Mathematische Annalen},
volume = {270},
year = {1985},
pages = {89-114},
zbl = {0563.58038},
url = {http://dml.mathdoc.fr/item/GDZPPN002327368}
}
Kakié, Kunio. A Fundamental Property of Monge Characteristics in Involutive Systems of Non-Linear Partial Differential Equations and its Application.. Mathematische Annalen, Tome 270 (1985) pp. 89-114. http://gdmltest.u-ga.fr/item/GDZPPN002327368/