@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042212,
 author = {Tsukuma, Hisayuki and Kubokawa, Tatsuya},
 month = {Sep},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Minimaxity in Estimation of Restricted and Non-restricted Scale Parameter Matrices},
 year = {2012}
}