Kalimuthu, S. ., T. . Perumal, E. . Marlisah, R. . Yaakob, V. . BS, and N. H. . Ismail. “HUMAN ACTIVITY RECOGNITION BASED ON DEVICE-FREE WI-FI SENSING: A COMPREHENSIVE REVIEW”. Malaysian Journal of Computer Science, vol. 37, no. 3, Aug. 2024, pp. 253-70, https://mojem.um.edu.my/index.php/MJCS/article/view/56465.