@article{BSMF_1890__18__1_0,
     author = {Perrin, R.},
     title = {Essai de th\'eorie compl\`ete du syst\`eme de deux formes ternaires quadratiques},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {1--80},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {18},
     year = {1890},
     doi = {10.24033/bsmf.402},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.402/}
}