@book{AST_1973__10_,
     author = {Collectif},
     title = {Prolongement analytique et alg\`ebres de Banach ultram\'etriques},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {10},
     year = {1973},
     zbl = {0289.12108},
     language = {mul},
     url = {http://www.numdam.org/item/AST_1973__10_/}
}

Prolongement analytique et algèbres de Banach ultramétriques. Astérisque, no. 10 (1973), 230 p. http://numdam.org/item/AST_1973__10_/