BOTTARI, A., L. GIOVANI, E. Lo GIUDICE, V. LONGO, M. C. SPADEA, and M. VECCHI. “Regional Macroseismic Field of the 1980 Irpinia Earthquake”. Annals of Geophysics, vol. 35, no. 1, Nov. 1982, pp. 27-84, doi:10.4401/ag-4670.