[1] Univ Cote Azur, CNRS, GREDEG, Nice Sophia Antipolis, France
[2] Univ Salerno, Dept Econ & Stat DISES, Fisciano, Italy
[3] Univ Granada, Dept Econ, Granada, Spain
[4] Univ Miguel Hernandez de Elche, Inst Univ Ctr Invest Operat, Elche, Spain
[5] Univ Padua, Dept Econ & Management Marco Fanno DSEA, Padua, Italy