1. Institute for Systems Engineering and Computers of Coimbra (INESCC), Coimbra, Portugal Department of Sciences and Technology, Universidade Aberta, Lisbon, Portugal
2. Research Centre for Territory, Transports and Environment (CITTA), Porto, Portugal
3. Institute for Systems Engineering and Computers of Coimbra (INESCC), Coimbra, Portugal Department of Civil Engineering, Polytechnic Institute of Coimbra, Coimbra, Portugal
4. Institute for Systems Engineering and Computers of Coimbra (INESCC), Coimbra, Portugal Department of Civil Engineering, University of Coimbra, Coimbra, Portugal