@article{AMPA_1816-1817__7__189_0,
     author = {Gergonne},
     title = {Vari\'et\'es. {Essai} de dialectique rationnelle},
     journal = {Annales de math\'ematiques pures et appliqu\'ees},
     pages = {189--228},
     publisher = {Veuve Courcier, Imprimeur-Libraire pour les Math\'ematiques},
     address = {Paris},
     volume = {7},
     year = {1816-1817},
     language = {fr},
     url = {http://www.numdam.org/item/AMPA_1816-1817__7__189_0/}
}