Amit Kumar, Pardeep Porwal and V. H. Badshah (2017) “An Epidemic Model with Immigration and Non-Monotonic Incidence Rate Under Treatment”, International Journal of Mathematics And its Applications, 5(4 - C), pp. 407–420. Available at: http://ijmaa.in/index.php/ijmaa/article/view/1287 (Accessed: 17 May 2024).