Reddy, B. Ravindra. “Some Threshold Theorems for a Prey-Predator Model With an Optimal Harvesting of the Prey”. International Journal Of Mathematics And Computer Research 1, no. 04 (April 27, 2013): 129-137. Accessed May 5, 2024. http://ijmcr.in/index.php/ijmcr/article/view/230.