1. Department of Economic and Statistic Sciences, University of Salerno, Fisciano (Salerno), Italy
2. Department of Business Sciences - Management and Innovation Systems, University of Salerno, Fisciano (Salerno), Italy
3. Department of Vocational Education of the Faculty of Education, Dresden University of Technology, Dresden, Germany
4. Department of Business and Legal Sciences, University of Calabria, Rende (Cosenza), Italy
5. Department of Law, Economics and Sociology, Magna Græcia University of Catanzaro, Catanzaro, Italy