1. Madeira Interactive Technologies Institute, University of Madeira, Portugal
2. DeustoTech, University of Deusto, Spain
3. ITI / LARSyS, Instituto Superior Técnico, University of Lisbon, Portugal and ITI / LARSyS, Instituto Superior Técnico, University of Lisbon, Portugal
4. ITI/LARSyS, University of Madeira, Portugal