@article{BSMF_1935__63__197_0,
     author = {Gay, A.},
     title = {Sur l'\'equation de {M.} {P.} {Humbert}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {197--209},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {63},
     year = {1935},
     doi = {10.24033/bsmf.1232},
     zbl = {0013.26601},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1232/}
}