Yingsamphancharoen, Trinet, Nakarin Srisuwan, and Chira Densangarun. “The improvement in deep drawing process for producing air filter by using finite element method”. Engineering and Applied Science Research 40, no. 1 (May 15, 2013): 125–130. accessed August 31, 2026. https://ph01.tci-thaijo.org/index.php/easr/article/view/8574.