@article{JRAM_1870__72_148136,
     author = {L. Painvin},
     title = {Courbure en un point multiple d'une surface.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {340--349},
     publisher = {mathdoc},
     volume = {72},
     year = {1870},
     zbl = {02.0536.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1870__72_148136/}
}