@article{MZ_1993__213_1_174526,
     author = {J\"urgen P\"oschel},
     title = {Nekhoroshev estimates for quasi-convex hamiltonian systems.},
     journal = {Mathematische Zeitschrift},
     pages = {187--216},
     publisher = {mathdoc},
     volume = {213},
     number = {1},
     year = {1993},
     zbl = {0857.70009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174526/}
}