@article{BSMF_1927__55__206_0,
     author = {Kanitani, J.},
     title = {Sur le rang de la forme de {Darboux} de l'hypersurface},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {206--217},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {55},
     year = {1927},
     doi = {10.24033/bsmf.1121},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1121/}
}