Maresi, Giorgio, et al. “Assessment and Characterisation of Turkish Hypovirulent Isolates of Cryphonectria Parasitica (Murr.) Barr”. Phytopathologia Mediterranea, vol. 40, no. 3, Dec. 2001, pp. 265-7, doi:10.14601/Phytopathol_Mediterr-1612.