Ragozzino, E., Faggioli, F., & Barba, M. (2005). Distribution of Citrus Exocortis Viroid and Hop Stunt Viroid in Cirtus Orchards of Central Italy as Revealed by One-Tube One-Step RT-PCR. Phytopathologia Mediterranea, 44(3), 322–326. https://doi.org/10.14601/Phytopathol_Mediterr-1807