@article{GDZPPN002245930, title = {Zur Pfaff'schen L\"osung des Pfaff'schen Problems}, journal = {Mathematische Annalen}, volume = {16}, year = {1880}, pages = {523-530}, zbl = {12.0279.01}, url = {http://dml.mathdoc.fr/item/GDZPPN002245930} }
Mayer, in Leipzig. Zur Pfaff'schen Lösung des Pfaff'schen Problems. Mathematische Annalen, Tome 16 (1880) pp. 523-530. http://gdmltest.u-ga.fr/item/GDZPPN002245930/