@article{JMPA_1869_2_14__9_0,
     author = {de la Gournerie},
     title = {M\'emoire sur les lignes spiriques},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {9--64},
     year = {1869},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 14},
     language = {fr},
     url = {https://www.numdam.org/item/JMPA_1869_2_14__9_0/}
}