Butdee, Suthep, and C. Trakunsaranakom. “QFDE Combined with TRIZ Framework to Formulate and Respond to Functional Design for a High Temperature Machine (HTM)”. Applied Science and Engineering Progress 3, no. 4 (September 10, 2013): 77–84. accessed September 19, 2026. https://ph02.tci-thaijo.org/index.php/ijast/article/view/67393.