Phuensane, D., N. Chinnoraset, D. Chancharat, and D. Chancharat. “Volatility of Stock Returns in the Stock Exchange of Thailand: The Case of Energy and Utilities Group”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, vol. 6, no. 3, Nov. 2018, pp. 97-104, https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/156355.