@article{AFST_1933_3_25__69_0,
     author = {Gambier, Bertrand},
     title = {Congruences de cercles ; points focaux},
     journal = {Annales de la Facult\'e des sciences de l'Universit\'e de Toulouse pour les sciences math\'ematiques et les sciences physiques},
     pages = {69--114},
     publisher = {\'Edouard Privat, Imprimeur-\'Editeur},
     address = {Toulouse},
     volume = {3e s{\'e}rie, 25},
     year = {1933},
     zbl = {0009.13001},
     language = {fr},
     url = {http://archive.numdam.org/item/AFST_1933_3_25__69_0/}
}