HESSENIUS, H.; TRENKLER, G. Pre-test estimation in the linear regression model with competing linear constraints. Statistica, [S. l.], v. 52, n. 1, p. 17–31, 1992. DOI: 10.6092/issn.1973-2201/889. Disponível em: https://rivista-statistica.unibo.it/article/view/889. Acesso em: 2 dec. 2021.