Croci, G., D. D’Ayala, and R. Liburdi. “History, Observation and Mathematical Models in the Seismic Analysis of the Valadier Abutment Area in the Colosseum”. Annals of Geophysics 38, no. 5-6 (November 25, 1995). Accessed April 19, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4096.