Tarasawatpipat, C., and W. Mekhum. “Nexus Between Fuel Prices and Energy Consumption in ASEAN Region: Role of Coal, Gas and Oil Prices”. International Journal of Energy Economics and Policy, vol. 10, no. 6, Oct. 2020, pp. 553-8, https://www.econjournals.com/index.php/ijeep/article/view/10452.