BILGE, A. H.; TULUNAY, Y. K. Spectral analysis of geomagnetic data from Kandilli Observatory, Istanbul. Annals of Geophysics, [S. l.], v. 40, n. 6, 1997. DOI: 10.4401/ag-3833. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3833. Acesso em: 13 apr. 2024.