Marwan, Marwan, Johan Matheus Tuwankotta, and Eric Harjanto. “Application of Lagrange Multiplier Method for Computing Fold Bifurcation Point in A Two-Prey One Predator Dynamical System”. Journal of the Indonesian Mathematical Society 24, no. 2 (May 18, 2018): 7–19. Accessed November 21, 2024. https://jims-a.org/index.php/jimsa/article/view/595.