@article{SAF_1979-1980____A4_0,
     author = {Levy, M.},
     title = {Prolongement d{\textquoteright}un op\'erateur d{\textquoteright}un sous-espace de $L^1(\mu )$ dans $L^1(\nu )$},
     journal = {S\'eminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz")},
     note = {talk:5},
     pages = {1--5},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1979-1980},
     zbl = {0461.47014},
     language = {fr},
     url = {http://www.numdam.org/item/SAF_1979-1980____A4_0/}
}