@article{GDZPPN002436132,
title = {Cohomology of Symplectomorphism Groups and Critical Values of Hamiltonians.},
journal = {Mathematische Zeitschrift},
volume = {202},
year = {1989},
pages = {75-82},
zbl = {0644.57024},
url = {http://dml.mathdoc.fr/item/GDZPPN002436132}
}
Weinstein, Alan. Cohomology of Symplectomorphism Groups and Critical Values of Hamiltonians.. Mathematische Zeitschrift, Tome 202 (1989) pp. 75-82. http://gdmltest.u-ga.fr/item/GDZPPN002436132/