@article{JMPA_1952_9_31__319_0,
     author = {Marchaud, Andr\'e},
     title = {Sur une classe de points singuliers des surfaces du troisi\`eme ordre de la g\'eom\'etrie finie},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {319--340},
     volume = {9e s{\'e}rie, 31},
     year = {1952},
     mrnumber = {55731},
     zbl = {0048.16302},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1952_9_31__319_0/}
}