Costanza, Francesca, Manuel Gentile, Luciano Seta, Vito Pipitone, Erasmo Vassallo, and Mario Allegra. (2017) 2016. “Regional Differences in Italian students’ Performance: a Simulation Model”. New Trends and Issues Proceedings on Humanities and Social Sciences 2 (5). https://un-pub.eu/ojs/index.php/pntsbs/article/view/1117.