Some necessary and sufficient conditions are given for two equalities of ordinary least-squares estimators and best linear unbiased estimators of an estimable vector of parametric functions under a general linear model and its transformed linear model to hold. © 2008 Elsevier Inc. All rights reserved.
Tian, Y., & Puntanen, S. (2009). On the equivalence of estimations under a general linear model and its transformed models. Linear Algebra and Its Applications, 430(10), 2622–2641. https://doi.org/10.1016/j.laa.2008.09.016