@article{GDZPPN002441020,
title = {Coherent orientations for periodic orbit problems in symplectic geometry.},
journal = {Mathematische Zeitschrift},
volume = {212},
year = {1993},
pages = {13-38},
zbl = {0789.58022},
url = {http://dml.mathdoc.fr/item/GDZPPN002441020}
}
Hofer, H.; Floer, A. Coherent orientations for periodic orbit problems in symplectic geometry.. Mathematische Zeitschrift, Tome 212 (1993) pp. 13-38. http://gdmltest.u-ga.fr/item/GDZPPN002441020/