1. Anfoka, G. H. A., Khalil, A. B., & Fattash, I. (2003). Detection and molecular characterization of a phytoplasma associated with big bud disease of tomatoes in Jordan. Journal of Phytopathology, 151, 223–227.
2. Avinent, L., & Llacer, G (1995). Stolbur detection in Spain by polymerase chain reaction (PCR). Plagas, 21, 417–423.
3. Bové, J. M., Fos, A., & Lallemand, J. (1987). Epidemiology of Spiroplasma citri in the Oldworld. Israel Journal of Medical Sciences, 23, 663–666.
4. Castro, S., & Romero, J. (2002). The association of clover proliferation phytoplasma with stolbur disease of pepper in Spain. Journal of Phytopathology, 150, 25–29.
5. Chen, M. H., & Hiruki, C. (1975). Electron microscopy of mycoplasma-like bodies associated with clover proliferation disease. Proceedings of the American Phytopathological Society, 2, 52.