@article{BSMF_1891__19__52_1,
     author = {Laisant, C.- A.},
     title = {Quelques formules relatives aux fonctions hyperboliques},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {52--54},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {19},
     year = {1891},
     doi = {10.24033/bsmf.431},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.431/}
}