@article{SAF_1978-1979____A11_0,
     author = {Ekeland, I.},
     title = {Relations d'ordre dans les {Banach} : quelques applications \`a l'analyse},
     journal = {S\'eminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz")},
     note = {talk:12},
     pages = {1--7},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1978-1979},
     zbl = {0425.46010},
     language = {fr},
     url = {http://www.numdam.org/item/SAF_1978-1979____A11_0/}
}