@book{MSMF_1971__26__3_0,
     author = {Marty, Robert},
     title = {Sous-groupes fonctoriels et relativisations},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {26},
     year = {1971},
     doi = {10.24033/msmf.53},
     mrnumber = {45 #5230},
     zbl = {0246.20048},
     language = {fr},
     url = {http://www.numdam.org/item/MSMF_1971__26__3_0/}
}