1. Assistant Professor, Dept. of Civil Engineering, Univ. of Coimbra FCTUC, Polo II 3030-290 Coimbra, Portugal.
2. Associate Professor, Dept. of Civil Engineering, Univ. of Coimbra FCTUC, Polo II 3030-290 Coimbra, Portugal.
3. Associate Professor, Dept. of Civil Engineering, TU Delft, Stevinweg 1 2628 CN Delft, The Netherlands.
4. Senior Research Officer, LNEC National Laboratory of Civil Engineering, Av. do Brasil, 101 1700-066, Lisboa, Portugal.