Alfred, Kuyu John. “Application of Regression Analyses and Marginal Analyses for Assessing the Effectiveness of COVID-19 Pandemic Mitigation Measures in Bulgaria”. Journal of Global Economy, Business and Finance 6, no. 8 (August 29, 2024): 37–43. Accessed January 4, 2025. https://bryanhousepub.com/index.php/jgebf/article/view/500.