1. Moreno P, Ambros S, Albiach-Marti MR et al (2008) Citrus tristeza virus: a pathogen that changed the course of the citrus industry. Mol Plant Pathol 9:251–268
2. Bar-Joseph M, Marcus R, Lee RF (1989) The continuous challenge of Citrus tristeza virus Control. Annu Rev Phytopathol 27:291–316
3. van Vuuren SP, Manicom BQ (2005) The response of star ruby grapefruit to different citrus tristeza virus isolates. In: Hilf ME, Duran-Vila N, Rocha-Peña MA (eds) Proceedings of the sixteenth conference of the international organization of citrus virologists, Mexico, 2004. IOCV, Riverside, CA, pp 112–116
4. Gal-On A, Shiboleth YM (2005) Cross-protection. In: Loebenstein G, Carr JP (eds) Natural resistance mechanisms of plants to viruses. Springer, Dordrecht, pp 261–288
5. Folimonova SY, Robertson CJ, Shilts T et al (2010) Infection with strains of Citrus tristeza virus does not exclude superinfection by other strains of the virus. J Virol 84:1314–1325