R.Sasikumar, X.Dion Harris, J.A.Hamilton Raaj, T.Dinesh, G.Ebenezer. “Smart Face Sketch Recognition Using Computer Vision And CNN Model”. International Journal of Advanced Science and Technology, Vol. 29, no. 7s, May 2020, pp. 2652 -59, http://sersc.org/journals/index.php/IJAST/article/view/16751.