@article{JMPA_1901_5_7__305_0,
     author = {Brunel, G.},
     title = {Sur les deux syst\`emes de triades de treize \'el\'ements},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {305--330},
     publisher = {Gauthier-Villars},
     volume = {5e s{\'e}rie, 7},
     year = {1901},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1901_5_7__305_0/}
}