1. Department of Tourism, Varna University of Management, Varna, Bulgaria
2. USC Center for Public Relations, Annenberg School of Communication and Journalism, University of Southern California, Los Angeles, California, USA
3. Department of Nutrition and Hospitality Management, University of Mississippi, Mississippi, USA
4. School of Management, University of South Australia Business School, Adelaide, Australia
5. Department of Management, Ball State University, Muncie, Indiana, USA