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@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/} }
M. G. Lyubarskii. An analogue of Floquet's theorem. Doklady Akademii Nauk, Tome 281 (1985) no. 5, pp. 1044-1047. http://geodesic.mathdoc.fr/item/DAN_1985_281_5_a4/