1. Department of Economics and Business Studies (DIEC) & Italian Centre of Excellence for Logistics Transport and Infrastructure (CIELI), University of Genoa, Genoa, Italy;
2. IUT de Chartres, University of Orléans, Orléans, France;
3. Institute of Studies on Mediterranean Societies (ISSM), National Research Council (CNR), Naples, Italy;
4. Department of Management and Quantitative Studies, Parthenope University of Naples (Italy), Naples, Italy