AGOPYAN, H. Revised comparison and analysis of severe magnetic storm effects measured over Istanbul and Rome. Annals of Geophysics, [S. l.], v. 52, n. 5, p. 453–458, 2009. DOI: 10.4401/ag-4602. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4602. Acesso em: 25 sep. 2022.