KOLAR-JURKOVŠEK, T. The 1980 Eruptions of Mount St. Helens. Geologija, [S. l.], v. 26, n. 1, p. 245–247, 1983. Disponível em: https://www.geologija-revija.si/index.php/geologija/article/view/538. Acesso em: 6 may. 2024.