Mukhopadhyay, B., and R. Bhattacharyya. “On a Three-Tier Ecological Food Chain Model With Deterministic and Random Harvesting: A Mathematical Study”. Nonlinear Analysis: Modelling and Control 16, no. 1 (January 25, 2011): 77–88. Accessed December 6, 2025. https://www.journals.vu.lt/nonlinear-analysis/article/view/14116.