Simeone, A. M., Cappellini, P., & Zhang, Y. (2000). Physiological Modifications Caused by Plum Pox Virus in the Leaves of Peach and Apricot Tree. Phytopathologia Mediterranea, 39(3), 447–450. https://doi.org/10.14601/Phytopathol_Mediterr-1584