Barthe, G.A., Ceccardi, T.L., Manjunath, K.L. and Derrick, K.S. (1998). Citrus psorosis virus: nucleotide sequencing of the coat protein gene and detection by hybridization and RT-PCR. J. Gen. Virol., 79, 1531-1537.

Derrick, K.S., Brlansky, R.H., Da Graça, J.V., Lee, R.F., Timmer. L.W. and Nguyen, T.K. (1988). Partial characterization of a virus associated with citrus ringspot. Phytopathology, 78, 1298-1301.

Garcia, M.L., Dal Bo, E., Grau, O. and Milne, R.G. (1994). The closely related citrus ringspot and citrus psorosis viruses have particles of novel filamentous morphology. J. Gen. Virol., 75, 3585-3590.

Milne, R.G., Djelouah, K., Garcia, M.L., Dal Bo, E. and Grau, O. (1996). Structure of citrus ringspot-psorosis-associated virus particles: Implications for diagnosis and taxonomy. Proc. 13^th Conf. Internatl. Org. Citrus Virol., IOCV, Riverside, 189-197.

Morikawa, T., Nomura, Y., Yamamoto, T. and Natsuaki, T. (1995). Partial characterization of virus-like particles associated with tulip mild mottle mosaic. Ann. Phytopathol. Soc. Jpn., 61, 578-581.

Navas-Castillo, J. and Moreno, P. (1995). Filamentous flexuous particles and serologically related proteins of variable size associated with citrus psorosis and ringspot diseases. Europ. J. Plant Pathol., 101, 343-348.

Sanchez de la Torre, M.E., Riva, O., Zandomeni, R., Grau, O. and Garcia, M.L. (1998). The top component of citrus psorosis virus contains two ssRNAs, the smaller encodes the coat protein. Mol. Plant Pathol.On-Line, http://www.bspp.org.uk/mppol/1998/1019sanchez.

Vaira, A.M., Milne, R.G., Accotto, G.P., Luisoni, E., Masenga, V. and Lisa, V. (1997). Partial characterization of a new virus from ranunculus with a divided RNA genome and circular supercoiled thread-like particles. Archiv. Virol., 142, 2131-2146.