B. Thiyaneswaran, K. Anguraj, M. Sindhu, N. S. Yoganathan, J. Jayanthi. “Development of Iris Biological Features Extraction for Biometric Based Authentication to Prevent Covid Spread”. International Journal of Advanced Science and Technology, Vol. 29, no. 3, Apr. 2020, pp. 8266 -75, http://sersc.org/journals/index.php/IJAST/article/view/9084.