1.
Wen TY, Bani NA, Muhammad-Sukki F, Mohd Aris SA. Electroencephalogram (EEG) Human Stress Level Classification based on Theta/Beta Ratio. IJIE. 2020;12(6):174-180. Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/6598