Alsaraf E, A. AL-TALIB B. Employing Robust MM-estimators in Estimating Principal Component Regression Model - A Comparative Study-. IQJOSS [Internet]. 2021 Jun. 1 [cited 2025 Sep. 6];18(1):74-87. Available from: https://tanmiyat.uomosul.edu.iq/index.php/stats/article/view/29090