@article{MZM_2021_110_6_a16,
     author = {Ya. Shitov},
     title = {A solution to a problem on spectra of sign patterns of matrices},
     journal = {Matemati\v{c}eskie zametki},
     pages = {954},
     year = {2021},
     volume = {110},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_110_6_a16/}
}