@article{MZM_1989_45_6_a9,
     author = {I. M. Spitkovsky},
     title = {Factorization of almost-periodic matrix-valued functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {74--82},
     publisher = {mathdoc},
     volume = {45},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_6_a9/}
}