@article{SEDP_1981-1982____A6_0,
     author = {Ekeland, I.},
     title = {La th\'eorie des perturbations au voisinage des syst\`emes hamiltoniens convexes},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:7},
     pages = {1--10},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1981-1982},
     zbl = {0506.70017},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1981-1982____A6_0/}
}