@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/