Azzara, Riccardo Mario, Anna De Falco, Maria Girardi, and Daniele Pellegrini. “Ambient Vibration Recording on the Maddalena Bridge in Borgo a Mozzano (Italy): Data Analysis”. Annals of Geophysics 60, no. 4 (July 13, 2017): S0441. Accessed November 27, 2021. https://www.annalsofgeophysics.eu/index.php/annals/article/view/7159.