1. Department of Mathematic School of Technology and Management, Polytechnic of Leiria Leiria Portugal
2. Coimbra Business School, ISCAC—Higher Institute of Accounting and Administration Coimbra Portugal
3. Department of Management, Sport and Tourism La Trobe Business School La Trobe University Melbourne, Victoria Australia
4. ISCET—Higher Institute of Business and Tourism Coimbra Portugal
5. Department of Industrial Management, University of Aveiro Aveiro Portugal
6. University of Vigo Vigo Portugal
7. ISCET—Instituto Superior de Ciências Empresariais e do Turismo Porto Portugal
8. University of Porto Porto Portugal
9. FCUP—Faculdade de Ciências da Universidade do Porto Porto Portugal