@article{BSMF_1902__30__106_0,
     author = {Raffy, L.},
     title = {Sur la d\'eformation des surfaces et sur certaines transformations des \'equations aux d\'eriv\'ees partielles du second ordre},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {106--108},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {30},
     year = {1902},
     doi = {10.24033/bsmf.662},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.662/}
}