@article{oai:tsukuba.repo.nii.ac.jp:00016181,
 author = {K., Krishnamoorthy and Divakar, Sharma},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {199--208},
 title = {Asymptotic risk comparison of some estimators for bivariate normal covariance matrix},
 volume = {8},
 year = {1984}
}