@misc{BSMA_1880_2_4_1_257_0, title = {Comptes rendus et analyses}, journal = {Bulletin des Sciences Math\'ematiques et Astronomiques}, pages = {257--261}, 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_257_0/} }