KLAUSNER, Virginia; DOMINGUES , Margarete Oliveira; MENDES, Odim; PAPA, Andres Reinaldo Rodrigues. Main patterns of the geomagnetic field: a case study using principal component analysis . Physicae, Campinas, SP, v. 11, n. 1, p. 1–11, 2015. DOI: 10.5196/physicae.v0i11.321. Disponível em: https://econtents.sbu.unicamp.br/inpec/index.php/physicae/article/view/13313. Acesso em: 19 fev. 2026.