@article{GDZPPN002025205,
title = {Das Goursat-Problem f\"ur uxy = f(x, y, u) (Short Communication)},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {117-118},
url = {http://dml.mathdoc.fr/item/GDZPPN002025205}
}
DEIMLING, KLAUS. Das Goursat-Problem für uxy = f(x, y, u) (Short Communication). Aequationes mathematicae, Tome 7 (1971) pp. 117-118. http://gdmltest.u-ga.fr/item/GDZPPN002025205/