STANKOV, S.; STEGEN, K.; WARNANT, R. K-type geomagnetic index nowcast with data quality control. Annals of Geophysics, [S. l.], v. 54, n. 3, 2011. DOI: 10.4401/ag-4655. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4655. Acesso em: 27 sep. 2021.