BIAGI, P. F. On time-distance curves for Pn waves in the Friuli earthquake of 6 May 1976. Annals of Geophysics, [S. l.], v. 32, n. 1, p. 27–35, 1979. DOI: 10.4401/ag-4728. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4728. Acesso em: 27 sep. 2022.