Sadettan, S., S. Hungsasutra, P. Binsomprasong, and J. Triyangkulsri. “Oscillation damping improvement in the Lao PDR power system by power system stabilizer (Thai)”. Asia-Pacific Journal of Science and Technology, vol. 14, no. 6, Apr. 2017, pp. 499-14, https://so01.tci-thaijo.org/index.php/APST/article/view/83472.