@article{ZNSL_1984_139_a7,
     author = {V. B. Khazanov},
     title = {Some spectral characteristics of $\lambda$-matrices},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {111--124},
     publisher = {mathdoc},
     volume = {139},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1984_139_a7/}
}