RAMAZZOTTI, Matteo, et al. “Insights on a Founder Effect: The Case of Xylella Fastidiosa in the Salento Area of Apulia, Italy”. Phytopathologia Mediterranea, vol. 57, no. 1, Feb. 2018, pp. 8-25, doi:10.14601/Phytopathol_Mediterr-22263.