@article{BSMF_1905__33__90_0,
     author = {Clairin, J.},
     title = {Sur certaines transformations des \'equations lin\'eaires aux d\'eriv\'ees partielles du second ordre},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {90--97},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {33},
     year = {1905},
     doi = {10.24033/bsmf.744},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.744/}
}