Ngamaramvaranggul, V., and N. Thongjub. “Simulation of Die-Swell Flow for Wet Powder Mass Extrusion in Pharmaceutical Process”. Applied Science and Engineering Progress, vol. 13, no. 4, Oct. 2020, pp. 354-61, https://ph02.tci-thaijo.org/index.php/ijast/article/view/242292.