Do, P., L. Huynh, D. Le, and T. Tran. “Design of Low Cost-Remote Eye Tracker Using Pupil Center-Corneal Reflection Technique”. VNUHCM Journal of Engineering and Technology, Vol. 4, no. 3, Sept. 2021, pp. 1079-92, doi:https://doi.org/10.32508/stdjet.v4i3.856.