@article{JMPA_1932_9_11__299_0,
     author = {Lebel, J.},
     title = {R\'eseaux conjugu\'es attach\'es aux d\'eveloppables des normales de certaines surfaces},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {299--332},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 11},
     year = {1932},
     zbl = {0005.31001},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1932_9_11__299_0/}
}