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@article{MAN_1894__44_157699, author = {L. Koenigsberger}, title = {Ueber die vollst\"andigen {Integrale} partieller {Differentialgleichungssysteme}}, journal = {Mathematische Annalen}, pages = {17--40}, publisher = {mathdoc}, volume = {44}, year = {1894}, zbl = {25.0601.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1894__44_157699/} }
L. Koenigsberger. Ueber die vollständigen Integrale partieller Differentialgleichungssysteme. Mathematische Annalen, Tome 44 (1894), pp. 17-40. http://geodesic.mathdoc.fr/item/MAN_1894__44_157699/