1. CEFAGE, Center for Advanced Studies in Management and Economics, Évora University, Palácio do Vimioso (Gab 224) Largo Marquês de Marialva 8, 7000-809, Évora, Portugal; School of Business Administration, ESCE/Polytechnic Institute of Setúbal, Campus do IPS, Estefanilha, 2914-503 Setúbal, Portugal
2. School of Business Administration, ESCE/Polytechnic Institute of Setúbal, Campus do IPS, Estefanilha, 2914-503 Setúbal, Portugal; CITIS, Research Centre on Tourism, Innovation and Services, Lusíada University, Rua da Junqueira, 188-198, 1349-001 Lisbon, Portugal
3. CEMAPRE, Centre for Applied Mathematics and Economics and School of Economics and Management, ISEG/Technical University of Lisbon, Rua do Quelhas 6, 1200-781 Lisbon, Portugal