Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1875__9_156700, author = {B\"acklund}, title = {Ueber {Fl\"achentransformationen}}, journal = {Mathematische Annalen}, pages = {297--320}, publisher = {mathdoc}, volume = {9}, year = {1875}, url = {http://geodesic.mathdoc.fr/item/MAN_1875__9_156700/} }
Bäcklund. Ueber Flächentransformationen. Mathematische Annalen, Tome 9 (1875), pp. 297-320. http://geodesic.mathdoc.fr/item/MAN_1875__9_156700/