Comparison Branch and Bound Algorithm with Trust Region Method for Solving Non-linear Bi-level Programming with Application. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), [S. l.], v. 48, n. 1, p. 1–14, 2021. DOI: 10.55562/jrucs.v48i1.33. Disponível em: https://jrucs.iq/index.php/JAUCS/article/view/33. Acesso em: 16 apr. 2026.