1. Aubert, B. & Bové, C. (1984) Mild and severe strains of citrus tristeza virus in Reunion island. In: Garnsey SM, Timmer LW, Dodds JA, eds. Proceedings of the 9th Conference of the International Organization of Citrus Virologists, IOCV, Riverside, 57–61.
2. Bar-Joseph, M., Marcus, R. & Lee, R.F. (1989) The continuous challenge of Citrus Tristeza Virus control. Annu Rev Phytopatol 27:291–316.
3. Da Graça, J.V., Marais, L.J. & Von Broemsen, L.A. (1984) Severe tristeza stem pitting decline of young grapefruit in South Africa. In: Gamsey SM, Timmer LW, Dodds JA, eds. Proceedings of the 9th Conference of the International Organization of Citrus Virologists, IOCV, Riverside, 62–65.
4. Fraser, R.S.S. (1990) The genetics of resistance to plant viruses. Annu. Rev. Phytopatol. 28, 179–200.
5. Garnsey, S.M., Barret, H.C. & Hutchison, D.J. (1987) Identification of Citrus Tristeza Virus resistance in Citrus relatives and its potential applications. Phytophylactica 19: 187–191.