“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, vol. 57, no. 2A, pp. 1031–1040, Jun. 2022, Accessed: May 17, 2024. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7485