@article{RM_1964_19_1_a5,
     author = {M. S. Brodskii and Yu. L. Shmul'yan},
     title = {Invariant subspaces of a~linear operator and divisors of its characteristic function},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1964_19_1_a5/}
}