Castelli, V., F. Bernardini, R. Camassi, C. H. Caracciolo, E. Ercolani, and L. Postpischl. “Looking for Missing Earthquake Traces in the Ferrara-Modena Plain: An Update on Historical Seismicity”. Annals of Geophysics, vol. 55, no. 4, Oct. 2012, doi:10.4401/ag-6110.