@article{DAN_1985_281_5_a4,
     author = {M. G. Lyubarskii},
     title = {An analogue of {Floquet's} theorem},
     journal = {Doklady Akademii Nauk},
     pages = {1044--1047},
     publisher = {mathdoc},
     volume = {281},
     number = {5},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_281_5_a4/}
}