Correction for multicollinearity between the explanatory variables to estimation by using the Principal component method . University of Thi-Qar Journal of Science, [S. l.], v. 2, n. 2, p. 145–151, 2010. Disponível em: http://jsci.utq.edu.iq/index.php/main/article/view/367.. Acesso em: 17 may. 2024.