Ni’ma AH. Theoretical Calculations of the Seasonal and Solar Activity Variations for Ionospheric Collision Frequency and Debye Length over Baghdad City. Al-Mustansiriyah J. Sci. [Internet]. 2017 Mar. 1 [cited 2025 Apr. 20];27(4). Available from: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/17