@article{BSMA_1875__8__234_1,
     author = {Clebsch, A.},
     title = {Sur un nouvel \'el\'ement fondamental de la g\'eom\'etrie analytique du plan},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {234--249},
     publisher = {Gauthier-Villars},
     volume = {8},
     year = {1875},
     language = {fr},
     url = {http://archive.numdam.org/item/BSMA_1875__8__234_1/}
}