MOHAMMED , Fahmi A. 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, [S. l.], v. 57, n. 2A, p. 1031–1040, 2022. Disponível em: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7485.. Acesso em: 8 dec. 2025.