“Astudy and Analysis of Geomagnetic Field By using Model of International Geomagnetic Reference Field (IGRF- 2000)” (2017) Ibn AL-Haitham Journal For Pure and Applied Sciences, 19(2), pp. 29–37. Available at: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1566 (Accessed: 12 May 2024).