1. Dept. of Structures for Engineering and Architecture, University of Naples Federico II, Naples, Italy
2. School of Engineering, University of Basilicata, Potenza, Italy
3. Dept. of Structural and Geotechnical Engineering, Sapienza University of Rome, Rome, Italy
4. Dept. of Engineering and Geology, University G. d’Annunzio of Chieti-Pescara, Pescara, Italy
5. Willis Re, Willis Group Limited, London UK
6. Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia