1. Brakke, CMI/AAB Descriptions of Plant Viruses 77, 4 pp., 1971.
  2. Calvert, Rec. agric. Res. Minist. Agric. N. Ire. 17: 31, 1968.
  3. Calvert & Harrison, Pl. Path. 15: 134, 1966.
  4. Cooper & Harrison, Pl. Path. 22: 73, 1973.
  5. Harrison & Jones, Ann. appl. Biol. 65: 393, 1970.
  6. Harrison & Jones, Ann. appl. Biol. 68: 281, 1971a.
  7. Harrison & Jones, Ann. appl. Biol. 67: 377, 1971b.
  8. Jones & Harrison, Ann. appl. Biol. 63: 1, 1969.
  9. Jones & Harrison, Ann. appl. Biol. 71: 47, 1972.
  10. Kassanis, Woods & White, J. gen. Virol. 14: 123, 1972.
  11. White, Kassanis & James, J. gen. Virol. 15: 175, 1972.