@article{JMPA_1839_1_4__241_0,
     author = {Terquem},
     title = {Sur une propri\'et\'e des surfaces du second degr\'e},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {241--242},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 4},
     year = {1839},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1839_1_4__241_0/}
}