@article{AMPA_1811-1812__2__280_0,
     author = {Penjon},
     title = {Deuxi\`eme solution},
     journal = {Annales de math\'ematiques pures et appliqu\'ees},
     pages = {280--281},
     publisher = {Veuve Courcier, Imprimeur-Libraire pour les Math\'ematiques},
     address = {Paris},
     volume = {2},
     year = {1811-1812},
     language = {fr},
     url = {http://www.numdam.org/item/AMPA_1811-1812__2__280_0/}
}