@incollection{MSMF_1972__31-32__143_0,
     author = {Dhombres, Jean},
     title = {Moyennes de fonctions et op\'erateurs multiplicativement li\'es},
     booktitle = {Colloque d'analyse fonctionnelle (Bordeaux, 1971)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {143--149},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {31-32},
     year = {1972},
     doi = {10.24033/msmf.76},
     mrnumber = {52 #1402},
     zbl = {0252.47031},
     url = {http://www.numdam.org/articles/10.24033/msmf.76/}
}