Dawongsa, Areerat. “Fabrication of Thermoelectric Generator Using Local Minerals at Loei Province, Thailand”. SNRU Journal of Science and Technology 8, no. 1 (April 21, 2016): 204–210. Accessed January 29, 2022. https://ph01.tci-thaijo.org/index.php/snru_journal/article/view/55346.