@article{AIHPA_1987__47_4_355_0,
     author = {Gutkin, D.},
     title = {A-cohomologie et op\'erateurs de r\'ecursion},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {355--366},
     publisher = {Gauthier-Villars},
     volume = {47},
     number = {4},
     year = {1987},
     mrnumber = {933682},
     zbl = {0639.58017},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1987__47_4_355_0/}
}