1. Universidade de Lisboa, CERENA, DECIVIL, Instituto Superior Técnico, Lisboa, Portugal. (corresponding author)
2. Ghent University, Department of Environment, Gent, Belgium and University of Osnabrück, Neueste Geschichte, Osnabrück, Germany.
3. Universidade de Lisboa, CERENA, DECIVIL, Instituto Superior Técnico, Lisboa, Portugal.
4. Ghent University, Department of Environment, Gent, Belgium.