1. Management and Economics Department, Universidade da Beira Interior, Covilhã, Portugal
2. Management and Economics Department & NECE –Research Unit, Universidade da Beira Interior, Covilhã, Portugal
3. Faculty of Economics & Management, Free University of Bozen-Bolzano, Bolzano, Italy; Department of Business Management, University of Johannesburg, Johannesburg, South Africa
4. Anderson School of Management, University of New Mexico, Albuquerque, New Mexico, USA