D. Khudhur A, A. Hadi K. Analytical Study for the Annual TEC Parameter Variations for the Solar Cycle 24 over Iraqi Zone. Iraqi Journal of Science [Internet]. 2023 Mar. 14 [cited 2025 Dec. 8];56(3C):2694-703. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9647