椎名洋
Gupta
Estimation of the eigenvalues of noncentrality parameter in matrix variate noncentral beta distribution Annals of the Institute of Statistical Mathematics , 56(1):101-125 2004, Author:Yo Sheena, Arjun K. Gupta, Yasunori Fujikoshi
On Minimaxity of the Normal Precision Matrix Estimator of Krishnamoorthy and Gupta, Statistics , 37(5):387-399 2003(Oct.) Author:Yo Sheena
Estimation of the multivariate normal covariance matrix under some restrictions Statistics and Decisions , 21:327-342 2003 Author:Yo Sheena, Arjun K. Gupta
On Minimaxity of some orthogonally Invariant Estimators of Bivariate Normal Dispersion Matrix, Journal of Japan Statistical Society , 32(2):193-207 2002 Author:Yo Sheena