FATMI, M’Barek, et al. “Fire Blight (Erwinia Amylovora [Burrill] Winslow) in Morocco: Importance, Geographical Distribution and Characterization”. Phytopathologia Mediterranea, vol. 50, no. 2, July 2011, pp. 212-27, doi:10.14601/Phytopathol_Mediterr-9132.