@article{ASENS_1902_3_19__S3_0,
     author = {Clairin, Jean},
     title = {Sur les transformations de Baecklund},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 19},
     year = {1902},
     pages = {3-63},
     doi = {10.24033/asens.518},
     language = {fr},
     url = {http://www.numdam.org/item/ASENS_1902_3_19__S3_0}
}

Clairin, J. Sur les transformations de Baecklund. Annales scientifiques de l'École Normale Supérieure, Serie 3, Volume 19 (1902) , pp. 3-63. (Additional pages) doi : 10.24033/asens.518. http://www.numdam.org/item/ASENS_1902_3_19__S3_0/