Liu, Chin-Hung. “A Group Decision-Making Framework With Various Rating Attitudes Using Fuzzy Set Theory to Prioritize Design Requirements in Quality Function Deployment”. International Journal of Industrial Engineering: Theory, Applications and Practice 15, no. 3 (December 3, 2008): 294–303. Accessed November 25, 2024. https://ijietap.journals.publicknowledgeproject.org/ijietap/index.php/ijie/article/view/145.