@article{BSMA_1880_2_4_1_268_1,
     author = {Henry, Charles},
     title = {Lettre \`a monsieur le r\'edacteur du {\guillemotleft} {Bulletin} {\guillemotright}},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {268--272},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 4},
     number = {1},
     year = {1880},
     language = {fr},
     url = {http://archive.numdam.org/item/BSMA_1880_2_4_1_268_1/}
}