O. Emmanuel, A. A. Adu, H. Emmanuel, and O. Enock, “Evaluating Estimator Performance in Unbalanced Climate Panels: A Simulation-Based Comparison of FE, IV, Difference-GMM, and System-GMM”, Jour. Inform. Math. Sci., vol. 18, no. 1, Mar. 2026, doi: 10.26713/jims.v18i1.3415.