A. Rahman, K. A., B. S. K. K. Ibrahim, M. M.A. Jamil, and A.M. Leman. 2012. “The Development of Control System via Brain Computer Interface (BCI) - Functional Electrical Stimulation (FES) for Paraplegic Subject”. International Journal of Integrated Engineering 4 (3). https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/624.