Muhammad, Faqeer, Rehmat Karim, Khair Muhammad, and Amna Asghar. 2020. “Population Density, CO2 Emission and Energy Consumption in Pakistan: A Multivariate Analysis”. International Journal of Energy Economics and Policy 10 (6):250-55. https://econjournals.net.tr/index.php/ijeep/article/view/10341.