@article{JMPA_1867_2_12__177_0, author = {de Tch\'ebychef, P.-L.}, title = {Des valeurs moyennes}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {177--184}, publisher = {Gauthier-Villars}, volume = {2e s{\'e}rie, 12}, year = {1867}, language = {fr}, url = {http://www.numdam.org/item/JMPA_1867_2_12__177_0/} }