@article{JMPA_1889_4_5__73_0,
     author = {Caspary, F.},
     title = {Extrait d'une lettre \`a {M.} {Hermite}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {73--79},
     publisher = {Gauthier-Villars},
     volume = {4e s{\'e}rie, 5},
     year = {1889},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1889_4_5__73_0/}
}