@article{ZVMMF_1997_37_2_a0,
     author = {Yu. A. Alpin},
     title = {Improvement of {Frobenius} bounds for the {Perron} root of a non-negative matrix},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {131--138},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1997_37_2_a0/}
}