Dubey, Balram, Shikhar Agarwal, and Ankit Kumar. 2018. “Optimal Harvesting Policy of a prey–predator Model With Crowley–Martin-Type Functional Response and Stage Structure in the Predator”. Nonlinear Analysis: Modelling and Control 23 (4): 493-514. https://doi.org/10.15388/NA.2018.4.3.