no. 4
Espaces de Banach-Stein
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 25 (1971) no. 4, pp. 683-690. 
@article{ASNSP_1971_3_25_4_683_0,
     author = {Ancona, Vincenzo and Speder, Jean-Paul},
     title = {Espaces de Banach-Stein},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {683--690},
     publisher = {Scuola normale superiore},
     volume = {3e s{\'e}rie, 25},
     number = {4},
     year = {1971},
     zbl = {0233.32012},
     mrnumber = {364687},
     language = {fr},
     url = {www.numdam.org/item/ASNSP_1971_3_25_4_683_0/}
}
Ancona, Vincenzo; Speder, Jean-Paul. Espaces de Banach-Stein. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 25 (1971) no. 4, pp. 683-690. http://www.numdam.org/item/ASNSP_1971_3_25_4_683_0/

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