PONDRELLI, S.; MORELLI, A. Seismic strain and stress field studies in Italy before and after the Umbria-Marche seismic sequence: a review. Annals of Geophysics, [S. l.], v. 51, n. 2-3, p. 319–330, 2008. DOI: 10.4401/ag-4446. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4446. Acesso em: 9 aug. 2022.