“Comparison of Some Estimation Methods for the Multiple Linear Regression Model With Existence of Both Auto - Correlation and Multicollinearity Problems”. 2021. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 46 (1): 132-56. https://doi.org/10.55562/jrucs.v46i1.73.