@article{FAA_1984_18_3_a17,
     author = {Yu. I. Lyubarskii},
     title = {Existence of a generalized {Floquet} basis},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {88--89},
     year = {1984},
     volume = {18},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1984_18_3_a17/}
}