@article{JRAM_1850__39_183310,
     author = {A. Cayley},
     title = {Sur le probl\`eme des contacts.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {4--13},
     publisher = {mathdoc},
     volume = {39},
     year = {1850},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1850__39_183310/}
}