1. Department of Business and Communication Sciences (DBCS), University Fernando Pessoa (UFP), 4294-004 Porto, Portugal
2. Escola Superior de Ciências Empresariais, Instituto Politécnico de Viana do Castelo, 4930-600 Valença, Portugal
3. Instituto Superior de Engenharia do Porto-ISEP, Polytechnic of Porto, 4200-072 Porto, Portugal
4. Department of Product and Production Development, SINTEF Manufacturing AS, 2830 Raufoss, Norway
5. Research on Economics, Management and Information Technologies (REMIT), Portucalense University, 4200-072 Porto, Portugal