@article{articleb693162b,
title   = {Bias in linear regression models with unknown covariance matrix},
author = {Aubin, Elisete da Conceição Quintaneiro and Cordeiro, Gauss Moutinho},
year = {1997},
doi = {10.1080/03610919708813413},
journal   = {Communications in Statistics. Simulation and Computation}
}