@article{DAN_1979_249_5_a20,
     author = {F. M. Izrailev and D. L. Shepelyanskii},
     title = {Quantum resonance for the rotor in a nonlinear periodic field},
     journal = {Doklady Akademii Nauk},
     pages = {1103--1107},
     year = {1979},
     volume = {249},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_249_5_a20/}
}