A family of estimators which dominate the maximum likelihood estimators of regression coefficients is given when the dependent variable and (3 or more) independent variables have a joint normal distribution.
@article{1176344798,
author = {Takada, Y.},
title = {A Family of Minimax Estimators in Some Multiple Regression Problems},
journal = {Ann. Statist.},
volume = {7},
number = {1},
year = {1979},
pages = { 1144-1147},
language = {en},
url = {http://dml.mathdoc.fr/item/1176344798}
}
Takada, Y. A Family of Minimax Estimators in Some Multiple Regression Problems. Ann. Statist., Tome 7 (1979) no. 1, pp. 1144-1147. http://gdmltest.u-ga.fr/item/1176344798/