Sinpang, Jacline Sudah, Shahida Sulaiman, and Norsham Idris. 2017. “Detecting Ambiguity in Requirements Analysis Using Mamdani Fuzzy Inference”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 9 (3-4):157-62. https://jtec.utem.edu.my/jtec/article/view/2936.