NI’MA, A. H. Theoretical Calculations of the Seasonal and Solar Activity Variations for Ionospheric Collision Frequency and Debye Length over Baghdad City. Al-Mustansiriyah Journal of Science, [S. l.], v. 27, n. 4, 2017. DOI: 10.23851/mjs.v27i4.17. Disponível em: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/17. Acesso em: 24 sep. 2022.