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@article{MAN_1882__19_156984, author = {Enneper}, title = {Zur {Theorie} der {Curven} doppelter {Kr\"ummung} .}, journal = {Mathematische Annalen}, pages = {72--83}, publisher = {mathdoc}, volume = {19}, year = {1882}, zbl = {13.0589.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1882__19_156984/} }
Enneper. Zur Theorie der Curven doppelter Krümmung .. Mathematische Annalen, Tome 19 (1882), pp. 72-83. http://geodesic.mathdoc.fr/item/MAN_1882__19_156984/