@article{GDZPPN002437260,
title = {Symplectic Topology and Hamiltonian Dynamics II.},
journal = {Mathematische Zeitschrift},
volume = {205},
year = {1990},
pages = {553-568},
zbl = {0729.53039},
url = {http://dml.mathdoc.fr/item/GDZPPN002437260}
}
Hofer, Helmut; Ekeland, Ivar. Symplectic Topology and Hamiltonian Dynamics II.. Mathematische Zeitschrift, Tome 205 (1990) pp. 553-568. http://gdmltest.u-ga.fr/item/GDZPPN002437260/