@article{oai:iuk-repo.repo.nii.ac.jp:00001321,
 author = {ナカジマ, マスミ and 中嶋, 眞澄 and Nakajima, Masumi},
 issue = {3},
 journal = {鹿児島経済論集, The Kagoshima journal of economics},
 month = {Dec},
 note = {application/pdf, We give here upper estimates of the numerical radii for non-normal and nilpotent matrices., 論文(Article)},
 pages = {89--106},
 title = {非正規行列,冪零行列の数域半径},
 volume = {62},
 year = {2021}
}