@article{IVM_1976_11_a11,
     author = {Yu. A. Alpin and N. Z. Gabbasov},
     title = {A remark on the problem locating the eigenvalues of real matrices},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {98--100},
     year = {1976},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_11_a11/}
}