1. Bruening, CMI/AAB Descriptions of Plant Viruses 199, 5 pp., 1978.
2. De Jager, CMI/AAB Descriptions of Plant Viruses 209, 5 pp., 1979.
3. Fulton & Scott, Phytopathology 69: 305, 1979.
4. Meiners, Waterworth, Lawson & Smith, Phytopathology 67: 163, 1977.
5. Moore, Pl. Dis. Reptr 57: 311, 1973.