1. Financial Markets and Institutions, Dipartimento di Scienze dell' Economia Università del Salento Lecce Italy
2. Financial Markets and Institutions, Department of Economics Parma University Parma Italy
3. Dipartimento di Scienze dell'Economia Università del Salento Lecce Italy
4. Business Administration, Ionic Department in Legal and Economic System of Mediterranean: Society, Environment, Culture University of Bari Taranto Italy