List of Articles Optimization problem Open Access Article Abstract Page Full-Text 1 - A New Hybrid Conjugate Gradient Method Based on Secant Equation for Solving Large Scale Unconstrained Optimization Problems Nasiru Salihu Mathew Odekunle Mohammed Waziri Abubakar Halilu https://doi.org/10.82521/IJO.2020.1018760 20.1001.1.25885723.2020.12.1.4.0 Open Access Article Abstract Page Full-Text 2 - Meta-heuristic algorithms to solve the problem of terminal facilities on a real scale Mehdi Fazli Farzin Modarres khiabani Behrooz Daneshian https://doi.org/10.82521/IJO.2022.1018815