@article{MZM_1997_61_3_a6,
     author = {L. I. Sukhocheva},
     title = {On certain spectral properties of a~quadratic self-adjoint matrix pencil with dominating main diagonals},
     journal = {Matemati\v{c}eskie zametki},
     pages = {381--390},
     publisher = {mathdoc},
     volume = {61},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_3_a6/}
}