@article{AIHPA_1990__52_4_377_0,
     author = {Herczy\'nski, Jan},
     title = {Semiclassical limit for perturbations of non-resonant rotators},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {377--395},
     publisher = {Gauthier-Villars},
     volume = {52},
     number = {4},
     year = {1990},
     mrnumber = {1062905},
     zbl = {0699.58059},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1990__52_4_377_0/}
}