@article{GDZPPN002025361,
title = {Das Goursat-Problem f\"ur},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {206-214},
zbl = {0222.35048},
url = {http://dml.mathdoc.fr/item/GDZPPN002025361}
}
DEIMLING, KLAUS. Das Goursat-Problem für. Aequationes mathematicae, Tome 7 (1971) pp. 206-214. http://gdmltest.u-ga.fr/item/GDZPPN002025361/