D.Catherine Rakkini1 , Pradeep.S. R , Deepthi.N , M. Ragavi Sudha B. E. 2017. “Black Polling Avoidance by Person Identification Using Biometrics”. International Journal of Emerging Trends in Science and Technology 4 (01), 4955-63. http://igmpublication.org/ijetst.in/index.php/ijetst/article/view/983.