ภักดี ว. . ., and รัตนพงศ์ ก. . . “Effects of an Electrode Gap on Efficiency of Electro-Coagulation Process in a Continuous-Flow Wastewater Treatment”. Engineering and Technology Horizons, vol. 33, no. 2, June 2020, pp. 36-41, https://ph01.tci-thaijo.org/index.php/lej/article/view/241345.