Ghelfi, Rino, Domenico Regazzi, and Sergio Rivaroli. “Rurality Study of Restricted Areas”. Italian Journal of Agronomy 4, no. s3 (October 5, 2009): 61–64. Accessed May 1, 2024. https://www.agronomy.it/agro/article/view/ija.2009.s3.61.