1. Isenberg School of Management, University of Massachusetts-Amherst, 121 Presidents Drive, Amherst, MA 01003, USA
2. Instituto Superior de Economia e Gestão, Technical University of Lisbon, Rua Miguel Lupi 20, 1249-078 Lisbon, Portugal, and UECE (Research Unit on Complexity and Economics)
3. Escola Profissional de Hotelaria e Turismo, Travessa Dos Piornais, São Martinho, 9000-246 Funchal, Madeira, Portugal