1. Department of Economics and Business Sciences, University of Cagliari, Cagliari, Italy
2. Oxford School of Hospitality Management, Oxford Brookes University, Oxford, UK
3. Department of Hotel and Tourism Management, Cyprus University of Technology, Limassol, Cyprus
4. School of Hospitality Business Management, College of Business, Washington State University, Pullman, WA, USA
5. Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milano, Italy