1. Marketing Department, Business School, Oxford Brookes University, Wheatley Campus , Oxford, UK
2. Faculty of Economics and Business, Department of Business Management, University of Malaga , Malaga, Spain
3. Department of Economic and Business Studies, Università del Piemonte Orientale , Novara, Italy
4. Management and Economics Department, Business School, Oxford Brookes University, Wheatley Campus , Oxford, UK