A I- MAHDI, H. A. Astudy and Analysis of Geomagnetic Field By using Model of International Geomagnetic Reference Field (IGRF- 2000). Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 19, n. 2, p. 29–37, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1566. Acesso em: 29 mar. 2025.