@article{ZVMMF_1992_32_9_a0,
     author = {L. A. Knizhnerman},
     title = {Error bounds in {Arnoldi's} method: {The} case of a normal matrix},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1347--1360},
     publisher = {mathdoc},
     volume = {32},
     number = {9},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1992_32_9_a0/}
}