@article{GDZPPN002104431, title = {Periodic Solutions on hypersurfaces and a result by C. Viterbo.}, journal = {Inventiones mathematicae}, volume = {88}, year = {1987}, pages = {1-10}, zbl = {0631.58022}, url = {http://dml.mathdoc.fr/item/GDZPPN002104431} }
Hofer, H.; Zehnder, E. Periodic Solutions on hypersurfaces and a result by C. Viterbo.. Inventiones mathematicae, Tome 88 (1987) pp. 1-10. http://gdmltest.u-ga.fr/item/GDZPPN002104431/