@article{BSMA_1870__1__348_1,
     author = {Darboux, G.},
     title = {Sur les syst\`emes lin\'eaires de coniques et de surfaces du second ordre},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {348--358},
     publisher = {Gauthier-Villars},
     volume = {1},
     year = {1870},
     language = {fr},
     url = {http://www.numdam.org/item/BSMA_1870__1__348_1/}
}