Selvakkumaran, S., and B. Limmeechokchai. “Assessment of Energy Security of an Energy Import-Dependent Country: A Case Study of Sri Lanka”. Science & Technology Asia, vol. 17, no. 1, Oct. 2015, pp. 54-67, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41190.