[1] Univ Naples Parthenope, Dept Business & Econ Studies, Dept Human & Social Sci, CNR, Naples, Italy
[2] Univ Naples Federico II, CSEF, Naples, Italy
[3] Univ Patras, Dept Business Adm, Patras, Greece
[4] Univ Patras, Dept Econ, Patras 26504, Greece
[5] CNR, Inst Studies Mediterranean, ISMed, Naples, Italy