Mohammed FA. The Relationship Between Solar Indices and Electron Density of D- Region over Baghdad City During the Ascending and the Descending Phases of Solar Cycle 23. Iraqi Journal of Science. 2022;57(2A):1031-1040. Accessed June 25, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7485