K. V. L. N. Acharyulu, K. Nagamani, I. Rajeswari, S. V. Vasavi, S. Maduri. (2020). A Traditional Series Solution of Epidemic Model (Type-III). International Journal of Advanced Science and Technology, 29(3), 15108 -. Retrieved from http://sersc.org/journals/index.php/IJAST/article/view/32249