@article {17719,
	title = {On the eigensystems of graded matrices},
	journal = {Numerische Mathematik},
	volume = {90},
	year = {2001},
	month = {2001///},
	pages = {349 - 370},
	doi = {10.1007/s002110100290},
	author = {Stewart, G.W.}
}
