1. GOVCOPP, DEGEIT, University of Aveiro, Aveiro, Portugal
2. ISEP, Polytechnic of Porto, rua Dr. António Bernardino de Almeida, 4249-015 Porto, Portugal
3. Associate Laboratory for Energy, Transports and Aerospace (LAETA-INEGI), rua
Dr. Roberto Frias 400, 4200-465 Porto, Portugal