@article{GDZPPN002236192,
title = {Periodic Solutions of Hamiltonian Systems on Hypersurfaces in Torus.},
journal = {Manuscripta mathematica},
volume = {83},
year = {1994},
pages = {307-322},
zbl = {0819.58031},
url = {http://dml.mathdoc.fr/item/GDZPPN002236192}
}
Jiang, Mei-Yue. Periodic Solutions of Hamiltonian Systems on Hypersurfaces in Torus.. Manuscripta mathematica, Tome 83 (1994) pp. 307-322. http://gdmltest.u-ga.fr/item/GDZPPN002236192/