Nguyen, T. T., and T. D. Vu. “Use of Hot Spot Analysis to Detect Underground Coal Fires from Landsat-8 TIRS Data: A Case Study in the Khanh Hoa Coal Field, North-East of Vietnam: DOI: 10.32526/Ennrj.17.3.2019.17”. Environment and Natural Resources Journal, vol. 17, no. 3, Feb. 2019, pp. 1-10, https://ph02.tci-thaijo.org/index.php/ennrj/article/view/173605.