"RELATIVE EFFICIENCY OF RIDGE REGRESSION AND ORDINARY LEAST SQUARE ESTIMATORS ON LINEAR REGRESSION MODELS AT DIFFERENT LEVELS OF MULTICOLLINEARITY" (2017) FULafia Journal of Science and Technology, 3(2), ص 77–81. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/83 (تاريخ الوصول: 17 مايو 2026).