WARRINGTON, E. M.; STOCKER, A. J.; ZAALOV, N. Y.; SIDDLE, D. R.; NASYROV, I. A. Propagation of HF radio waves over northerly paths: measurements,simulation and systems aspects. Annals of Geophysics, [S. l.], v. 47, n. 2-3 Sup., 2004. DOI: 10.4401/ag-3292. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3292. Acesso em: 29 mar. 2024.