@article{JMPA_1952_9_31__91_0,
     author = {Viola, Tullio},
     title = {Sur l'approximation des fonctions continues},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {91--101},
     volume = {9e s{\'e}rie, 31},
     year = {1952},
     mrnumber = {47088},
     zbl = {0047.06804},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1952_9_31__91_0/}
}