Speranza, M., G. Vianello, M. C. Mariani, M. Gherardi, G. Villani, and L. Ferroni. “Land Use Transformations, Territory Naturalness and Ecological Planning”. Italian Journal of Agronomy, vol. 4, no. s3, Oct. 2009, pp. 65-70, doi:10.4081/ija.2009.s3.65.