@article{ZNSL_1979_92_a5,
     author = {M. B. Gribov and N. K. Nikol'skii},
     title = {Invariant subspaces and rational approximation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {103--114},
     publisher = {mathdoc},
     volume = {92},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_92_a5/}
}