คำแพงศรี ศ. and แก้วทอง ช. (2018) “functionalization of hydrogel for metals detection”, Progress in Applied Science and Technology. Thailand, 8(2), pp. 10–17. available at: https://ph02.tci-thaijo.org/index.php/past/article/view/243020 (accessed: 3 September 2026).