“Investigation of the Electron Coefficients of (Ar, He, N2, O2) Gases in the Ionosphere”. Baghdad Science Journal 19, no. 6(Suppl.) (December 5, 2022): 1558. Accessed May 3, 2024. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7296.