SAVARENSKY, E. T.; VALDNER, N. G. Observations of Lg and Rg waves and remarks about the nature of Lg. Annals of Geophysics, [S. l.], v. 14, n. 1, p. 95–102, 1961. DOI: 10.4401/ag-5285. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5285. Acesso em: 30 may. 2024.