@article{AIHPA_1991__55_3_789_0,
     author = {Cabau, Patrick and Grifone, Joseph and Mehdi, Mohamad},
     title = {Existence de lois de conservation dans le cas cyclique},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {789--803},
     publisher = {Gauthier-Villars},
     volume = {55},
     number = {3},
     year = {1991},
     mrnumber = {1141714},
     zbl = {0748.58032},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1991__55_3_789_0/}
}