R. Al-Ubaidi, Najat M., and Mayse M. Al-Gbory. “Investigating the Accuracy of IRI Model for the Ionospheric TEC Parameter During Strong, Severe and Great Geomagnetic Storms from 2000-2013”. Iraqi Journal of Science 57, no. 3A (March 30, 2023): 2075–2095. Accessed July 3, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9964.