1. Instituto Politécnico de Castelo Branco, Castelo Branco, Portugal & NECE-Research Unit, Covilhã, Portugal
2. NECE-Research Unit, University of Beira Interior, Covilhã, Portugal
3. Instituto Politécnico de Castelo Branco, Castelo Branco, Portugal
4. School of Management, La Trobe Business School, La Trobe University, Melbourne, Australia