Phrakhruopatnontakitti, P., B. Watthanabut, and K. Jermsittiparsert. “Energy Consumption, Economic Growth and Environmental Degradation in 4 Asian Countries: Malaysia, Myanmar, Vietnam and Thailand”. International Journal of Energy Economics and Policy, vol. 10, no. 2, Jan. 2020, pp. 529-3, https://www.econjournals.com/index.php/ijeep/article/view/9229.