STAMPER, R.; BELEHAKI, A.; BURESOVÁ, D.; CANDER, L. R.; KUTIEV, I.; PIETRELLA, M.; STANISLAWSKA, I.; STANKOV, S.; TSAGOURI, I.; TULUNAY, Y. K. Nowcasting, forecasting and warning for ionospheric propagation: tools and methods. Annals of Geophysics, [S. l.], v. 47, n. 2-3 Sup., 2004. DOI: 10.4401/ag-3281. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3281. Acesso em: 23 may. 2022.