Mathematical Programming Model for Multi-Objective Smallholder Farming Systems in North-East Nigeria. European Journal of Agriculture and Food Sciences, [S. l.], v. 6, n. 6, p. 69–74, 2024. DOI: 10.24018/ejfood.2024.6.6.868. Disponível em: https://www.ejfood.org/index.php/ejfood/article/view/868. Acesso em: 23 oct. 2025.