@article{JMPA_1946_9_25__241_0, author = {Gambier, Bertrand}, title = {Cercles focaux d'une conique}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {241--255}, volume = {9e s{\'e}rie, 25}, year = {1946}, mrnumber = {23541}, zbl = {0061.31410}, language = {fr}, url = {http://archive.numdam.org/item/JMPA_1946_9_25__241_0/} }