1. Carbonara G (1997) Approach to restoration. Theory, history, monuments. Liguori (only available in Italian)
2. Giuffrè A (1993) Safety and preservation of historical centers. The Ortigia case. Laterza, Bari (only available in Italian)
3. ICOMOS/ISCARSAH (2001) Recommendations for the analysis, conservation and structural restoration of architectural heritage. Paris
4. Binda L, Baronio G, Penazzi D, Palma M, Tiraboschi C (1999) Characterization of stone masonry in seismic zone: data-base of the transverse sections and materials investigation. In: Proc. of 9th National Conference L’ingegneria Sismica. Italia, Turin (CD-ROM) (only available in Italian)
5. Doglioni F, Moretti A, Petrini V (1994) Churches and earthquake. LINT, Trieste (only available in Italian)