S. Kanagasabapathy, M. Mohammed Thoufiq Rahil, S. Aswin Kumar, Carmel Sobia, A. Geetha, “Mentoring System Enable with Vibration Alert for Deaf and Dumb Students Using Wi-Fi Module”, IJAST, vol. 29, no. 3, pp. 14227 - 14235, Mar. 2020.