Dr. A. Jalaludeen, Dr. M. Marimuthu, Dr. C. Gladson Clifford Joe. “Futures and Prospects of Open and Distance Learning Systems (ODL) in Tamilnadu During 21st Century”. Design Engineering, Dec. 2021, pp. 1760 -67, http://www.thedesignengineering.com/index.php/DE/article/view/7126.