@article{AIHPA_1983__38_4_349_0,
     author = {Morvan, Jean-Marie},
     title = {Quelques invariants topologiques en g\'eom\'etrie symplectique},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {349--370},
     publisher = {Gauthier-Villars},
     volume = {38},
     number = {4},
     year = {1983},
     mrnumber = {714023},
     zbl = {0521.53040},
     language = {fr},
     url = {http://archive.numdam.org/item/AIHPA_1983__38_4_349_0/}
}