Vijayalakshmi. R, Arul Selvan. C, Balakrishnan. K, Kavin Kumar. P, and Mahabalaji. P. 2017. “Wireless Digital Circular System”. International Journal of Intellectual Advancements and Research in Engineering Computations 5 (2):1162-67. https://ijiarec.com/ijiarec/article/view/1662.