Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1961__77_169974, author = {Manfred Breuer}, title = {Zum {Pfaffschen} {Problem.}}, journal = {Mathematische Zeitschrift}, pages = {63--67}, publisher = {mathdoc}, volume = {77}, year = {1961}, zbl = {0107.30002}, url = {http://geodesic.mathdoc.fr/item/MZ_1961__77_169974/} }
Manfred Breuer. Zum Pfaffschen Problem.. Mathematische Zeitschrift, Tome 77 (1961), pp. 63-67. http://geodesic.mathdoc.fr/item/MZ_1961__77_169974/