Romeo, Roberto W. “Emilia (Italy) M5.9 Earthquake on 20 May 2012: An Unusual Pattern of Liquefaction”. Italian journal of engineering geology and environment, no. 2 (December 30, 2012): 75–84. Accessed March 28, 2024. https://rosa.uniroma1.it/rosa02/engineering_geology_environment/article/view/992.