HASAN, Md. Nazmul; BISWAS, Md. Haider Ali; UDDIN, Md. Sharif. An Ecological Model for Sustainable Forest Management of Eco-system Based on Optimal Control Theory. Journal of Nepal Mathematical Society, [S. l.], v. 2, n. 1, p. 19–44, 2019. DOI: 10.3126/jnms.v2i1.33014. Disponível em: https://www.nepjol.info/index.php/jnms/article/view/33014. Acesso em: 8 dec. 2025.