PAATERO, Jussi; HATAKKA, Juha; KIVI, Rigel; IMMONEN, Jani. Radioactivity soundings of the upper atmosphere in Finland 1962-2022. Annals of Geophysics, [S. l.], v. 67, n. 2, p. PA214, 2024. DOI: 10.4401/ag-9069. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/9069. Acesso em: 5 apr. 2026.