@misc{BSMA_1884_2_8_1_254_1, title = {Extrait d'une lettre de {M.} {Bougaief}}, journal = {Bulletin des Sciences Math\'ematiques et Astronomiques}, pages = {254--256}, publisher = {Gauthier-Villars}, volume = {2e s{\'e}rie, 8}, number = {1}, year = {1884}, language = {fr}, url = {http://archive.numdam.org/item/BSMA_1884_2_8_1_254_1/} }