“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 ) 48, no. 1 (September 23, 2021): 1–14. Accessed April 16, 2026. https://jrucs.iq/index.php/JAUCS/article/view/33.