Sidek, Khairul Azami, Noor Hafizah Azlin Abd Halim, Ummi Nur Kamilah Abdullah Din, and Ahmad Fadzil Ismail. “Study of Emotional Variability Using Photoplethysmogram Signal”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 10, no. 1-6 (February 5, 2018): 1–6. Accessed December 21, 2024. https://jtec.utem.edu.my/jtec/article/view/3653.