A. Nalini, S. Gnanasekar, M. Kishorekumar, A. Sivarohit, P. Yugan, and V. Subashchandrabosh. 2016. “PERSONAL COMMUNICATION SYSTEM”. International Journal of Computer Science and Engineering Research and Development (IJCSERD) 1 (2): 1-7. https://ijcserd.in/index.php/home/article/view/IJCSERD_01_02_00002.