1. Bos, Huttinga & Maat, Neth. J. Pl. Path. 84: 227, 1978.
  2. Brunt & Thomas, Rep. Glasshouse Crops Res. Inst. for 1975, p. 124, 1976.
  3. Brunt, Phillips & Thomas, Acta Hort. 110: 205, 1980.
  4. Brunt, Stace-Smith & Leung, Intervirology 7: 303, 1976.
  5. Lihnell, Vaxtskyddsnotiser 15: 52, 1951.
  6. Luisoni, Boccardo & Milne, Phytopath. Z. 85: 65, 1976.
  7. Osaki, Kobatake & Inouye, Ann. phytopath. Soc. Japan 45: 62, 1979.
  8. Van der Meer, Rep. Res. Inst. Pl. Prot. for 1978, p. 31, 1979.
  9. Van der Meer, Maat & Vink, Neth. J. Pl. Path. 86: 69, 1980.