@article{AIHPA_1986__45_4_359_0,
     author = {Foulon, P.},
     title = {R\'eductibilit\'e de syst\`emes dynamiques variationnels},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {359--388},
     publisher = {Gauthier-Villars},
     volume = {45},
     number = {4},
     year = {1986},
     mrnumber = {880743},
     zbl = {0614.70017},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1986__45_4_359_0/}
}