@article{SAF_1974-1975____A24_0,
     author = {Stern, J.},
     title = {Le probl\`eme des enveloppes},
     journal = {S\'eminaire Maurey-Schwartz},
     note = {talk:25},
     pages = {1--7},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1974-1975},
     mrnumber = {430751},
     zbl = {0318.46026},
     language = {fr},
     url = {http://www.numdam.org/item/SAF_1974-1975____A24_0/}
}