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بدل رشيد الرشيداني خ. Assessment Restricted Liu Estimator to treating Multicollinearity Problem. IQJOSS [Internet]. 2006 Jun. 1 [cited 2025 Sep. 10];6(1):140-5. Available from: https://edusj.uomosul.edu.iq/index.php/stats/article/view/29285