Tomassoli, L., F. Faggioli, A. Zaccaria, R. Caccia, M. Albani, and M. Barba. 2004. “Molecular Diagnosis of Chrysanthemum Stunt Viroid for Routine Indexing”. Phytopathologia Mediterranea 43 (2):285-88. https://doi.org/10.14601/Phytopathol_Mediterr-1749.