HARDTWIG, E. RICERCHE SULL’AGITAZIONE MICROSISMICA IN GERMANIA DURANTE LA SECONDA GUERRA MONDIALE. Annals of Geophysics, [S. l.], v. 4, n. 1, p. 127–135, 1951. DOI: 10.4401/ag-5897. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5897. Acesso em: 4 aug. 2021.