@article{JRAM_1863__61_147877,
     author = {A. Cayley},
     title = {Note sur la r\'ealit\'e des racines d'une \'equation quadratique.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {367--368},
     publisher = {mathdoc},
     volume = {61},
     year = {1863},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1863__61_147877/}
}