@article{MT_1990_17_a1,
     author = {A. N. Malyshev},
     title = {Guaranteed accuracy in spectral problems of linear algebra},
     journal = {Matemati\v{c}eskie trudy},
     pages = {19--104},
     publisher = {mathdoc},
     volume = {17},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1990_17_a1/}
}