HARDTVIG, E. UNTERSUCIIUNGEN UEBER MIKROSEISMIK IN DEUTSCHEAND WAEHREND DES ZWEITEN WELTKRIEGES. Annals of Geophysics, [S. l.], v. 4, n. 1, p. 95–106, 1951. DOI: 10.4401/ag-5893. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5893. Acesso em: 27 apr. 2024.