Devendran K, Keerthika P, Manjula Devi R, Santhosh sivan P, RebhashiA, Ragul M. “CNN Based Feature Extractionand Classificationfor Degraded Historical Documents”. International Journal of Control and Automation, Vol. 13, no. 02, June 2020, pp. 1215 -21, http://sersc.org/journals/index.php/IJCA/article/view/26925.