« 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, décembre 2017, p. 77-81, https://lafiascijournals.org.ng/index.php/fjst/article/view/83.