Arboretti Giancristofaro, Rosa, Gianfranco Franz, Marco Marozzi, and Luigi Salmaso. “A Survey on Students of the University of Ferrara”. Statistica 65, no. 1 (October 23, 2007): 111–123. Accessed July 22, 2024. https://rivista-statistica.unibo.it/article/view/81.