“RELATIVE EFFICIENCY OF RIDGE REGRESSION AND ORDINARY LEAST SQUARE ESTIMATORS ON LINEAR REGRESSION MODELS AT DIFFERENT LEVELS OF MULTICOLLINEARITY”.
FULafia Journal of Science and Technology , vol. 3, no. 2, Dec. 2017, pp. 77-81,
https://lafiascijournals.org.ng/index.php/fjst/article/view/83.