@article{JMPA_1849_1_14__401_0,
     author = {Bonnet, Ossian},
     title = {Sur les surfaces isothermes et orthogonales},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {401--416},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 14},
     year = {1849},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1849_1_14__401_0/}
}