“Comparison of Some Methods for Estimating Parameters of General Linear Model in Presence of Heteroscedastic Problem and High Leverage Points”. Journal of Economics and Administrative Sciences 27, no. 127 (March 30, 2021): 213–228. Accessed November 29, 2024. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/2145.