Raham, Abbas R., Ahmed A. Al-Rubaiee, Majida H. Al-Kubaisy, and Suror N. Esmaeel. 2020. “Studying the Thinning Effect of Longitudinal Development in Extensive Air Showers for Primary Proton and Iron Nuclei at Ultra-High Energies”. Al-Mustansiriyah Journal of Science 31 (3): 114-18. https://doi.org/10.23851/mjs.v31i3.843.