Simeone, A. M., P. Cappellini, and Y. Zhang. “Physiological Modifications Caused by Plum Pox Virus in the Leaves of Peach and Apricot Tree”. Phytopathologia Mediterranea, vol. 39, no. 3, Dec. 2000, pp. 447-50, doi:10.14601/Phytopathol_Mediterr-1584.