@article{1195522129,
author = {Kumano-Go, Hitoshi},
title = {On differential operators with real characteristics},
journal = {Proc. Japan Acad.},
volume = {42},
number = {5},
year = {1966},
pages = { 115-118},
language = {en},
url = {http://dml.mathdoc.fr/item/1195522129}
}
Kumano-Go, Hitoshi. On differential operators with real characteristics. Proc. Japan Acad., Tome 42 (1966) no. 5, pp. 115-118. http://gdmltest.u-ga.fr/item/1195522129/