Krusun, S., T. Suktale, and O. Sritrakool. “Styrofoam Cutter, KKU-Model”. Srinagarind Medical Journal, vol. 2, no. 2, Nov. 2013, pp. 75-84, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13402.