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, [S. l.], v. 19, n. 2, p. 29–37, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1566.. Acesso em: 13 may. 2024.