Y. Louartassi, J. El Alami, and N. Elalami. “Harvesting Model for Fishery Resource With Reserve Area of Bird Predator and Modified Effort Function”. Malaya Journal of Matematik 5, no. 04 (October 1, 2017): 660–666. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/632.