@article{MZM_1992_52_4_a7,
     author = {A. M. Minkin},
     title = {Unconditional basis property of exponentials with a gap in the spectrum},
     journal = {Matemati\v{c}eskie zametki},
     pages = {62--67},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1992_52_4_a7/}
}