Arboretti Giancristofaro, Rosa, Gianfranco Franz, Marco Marozzi, and Luigi Salmaso. “A Survey on Students of the University of Ferrara”. Statistica 65, no. 1 (January 1, 2005): 111–123. Accessed April 20, 2024. https://rivista-statistica.unibo.it/article/view/81.