Chuckravanen, Dineshen. “Approximate Entropy As a Measure of Cognitive Fatigue: An EEG Pilot Study”. International Journal of Emerging Trends in Science and Technology 1, no. 07 (September 4, 2014). Accessed September 29, 2024. https://ijetst.igmpublication.org/index.php/ijetst/article/view/304.