Phrakhruopatnontakitti, Phrakhruopatnontakitti, et al. “Does CO2 Emission Have Any Link With the Change Democratic Conditions in ASEAN Countries?”. International Journal of Energy Economics and Policy, vol. 10, no. 3, Mar. 2020, pp. 196-03, https://econjournals.org.tr/index.php/ijeep/article/view/9169.