Khamboonrueang, Dusadee, Peraphat Kamkird, and Naraintorn Boonsong. 2023. “Feasibility Study on The Use of Reduced Graphene Oxide-Iron Oxide Composite for Removal of Hexavalent Chromium in Wastewater”. Rajamangala University of Technology Tawan-Ok Research Journal 16 (2). Chonburi, Thailand:47-57. https://li01.tci-thaijo.org/index.php/researchjournal2rmutto/article/view/260100.