Seepromting, K. “Feed-in Tariff Premium for Optimal Solar PV Allocation Case of Phitsanulok 1st Substation: Doi: 10.14456/Mijet.2018.9”. Engineering Access, vol. 4, no. 2, Dec. 2018, pp. 50-55, https://ph02.tci-thaijo.org/index.php/mijet/article/view/10.14456.mijet.2018.9.