@article{BSMA_1871__2__368_1,
     author = {Painvin},
     title = {\'Etude d'un complexe du second ordre},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {368--382},
     publisher = {Gauthier-Villars},
     volume = {2},
     year = {1871},
     language = {fr},
     url = {http://www.numdam.org/item/BSMA_1871__2__368_1/}
}