1. Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy
2. NTEC, University of Nottingham, Nottingham, UK
3. Department of Civil Engineering, University of Stellenbosch, Matieland, South Africa
4. Department of Civil and Environmental Engineering and Architecture, University of Parma, Parma, Italy
5. E.S.S.I.E. University of Florida, Gainesville, FL, USA