@article{JMPA_1938_9_17_1-4_203_0, author = {Dieudonn\'e, Jean}, title = {Sur l'approximation en moyenne par les polynomes trigonom\'etriques}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {203--211}, publisher = {Gauthier-Villars}, volume = {9e s{\'e}rie, 17}, number = {1-4}, year = {1938}, zbl = {0018.30203}, language = {fr}, url = {http://archive.numdam.org/item/JMPA_1938_9_17_1-4_203_0/} }