@article{JMPA_1935_9_14_1-4_1_0,
     author = {Charpentier, Marie},
     title = {Sur des courbes ferm\'ees analogues aux courbes de {M.} {Birkhoff}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {1--48},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 14},
     number = {1-4},
     year = {1935},
     zbl = {0011.17703},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1935_9_14_1-4_1_0/}
}