@article{ZNSL_1981_111_a5,
     author = {L. Yu. Kolotilina},
     title = {A class of test {Hessenberg} matrices},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {89--92},
     publisher = {mathdoc},
     volume = {111},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_111_a5/}
}