Modeling the Impact of Insurgency on Food Security in North-Eastern Nigeria: A Mathematical Approach. International Journal of Development Mathematics (IJDM), [S. l.], v. 3, n. 2, p. 073–089, 2026. DOI: 10.62054/ijdm/0302.05. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/349.. Acesso em: 21 sep. 2026.