1. Department of International Competitiveness, Poznań Univeristy of Economics and Business, Poznań, Poland
2. Department of Economics and Law, University of Macerata, Macerata, Italy
3. Department of Strategic Management, Poznań University of Economics and Business, Poznań, Poland
4. Department of Market Research and Services, Poznań University of Economics and Business, Poznań, Poland
5. Department of Management, Universita Politecnica delle Marche, Ancona, Italy