@article{ZVMMF_1973_13_6_a18,
     author = {I. M. Sobol' and R. B. Statnikov and N. F. Ovchinnikova},
     title = {Locating the eigenvalues of a matrix},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1581--1583},
     publisher = {mathdoc},
     volume = {13},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1973_13_6_a18/}
}