Ebiwonjumi, Ayooluwade. “On the Efficient and Optimal Predictive Values for Economic Growth With Covariate Predictors: Ordinary Least Square and Ridge Regression Approach”. FinTech and Sustainable Innovation 2 (January 29, 2026): A17. Accessed October 20, 2026. https://ojs.bonviewpress.com/index.php/FSI/article/view/5624.