一共三篇，都是一个期刊的，谢谢大家!
mean squared error comparisons of some biased regression estimators
链接：http://www.tandfonline.com/doi/abs/10.1081/STA-100002036

Mean squared error matrix comparisons of some biased estimators in linear regression
链接：http://cat.inist.fr/?aModele=afficheN&cpsidt=15281394

Admissible estimation for linear combination of fixed and random effects in general mixed linear models.
链接：http://cat.inist.fr/?aModele=afficheN&cpsidt=23004702