@article{SEDP_1987-1988____A14_0, author = {Herman, Michael R.}, title = {Existence et non existence de tores invariants par des diff\'eomorphismes symplectiques}, journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"}, note = {talk:14}, publisher = {Ecole Polytechnique, Centre de Math\'ematiques}, year = {1987-1988}, zbl = {0664.58005}, mrnumber = {1018186}, language = {fr}, url = {http://archive.numdam.org/item/SEDP_1987-1988____A14_0/} }