1. CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Coimbra, Portugal
2. ISEL, Department of Mechanical Engineering, Polytechnic Institute of Lisbon, Lisboa, Portugal
3. ADAI, LEDAP, Department of Mechanical Engineering, University of Coimbra, Coimbra, Portugal
4. ESAD.CR, Polytechnic Institute of Leiria, Caldas da Rainha, Portugal