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@article{IVM_1969_7_a9, author = {V. I. Romanov}, title = {The reducibility of certain systems with periodic and quasiperiodic matrices}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {70--73}, publisher = {mathdoc}, number = {7}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_7_a9/} }
V. I. Romanov. The reducibility of certain systems with periodic and quasiperiodic matrices. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 7 (1969), pp. 70-73. http://geodesic.mathdoc.fr/item/IVM_1969_7_a9/