1. Brants & Van den Heuvel, Neth. J. Pl. Path. 71: 145, 1965.
  2. Brants, Fokkema & De Bode, Neth. J. Pl. Path. 76: 171, 1970.
  3. Bremer, Meded. Proefstn Java-Suik Ind. 11: 337, 1926.
  4. Brunt, Rep. Glasshouse Crops Res. Inst. 1972: 103, 1973.
  5. De Leeuw, Neth. J. Pl. Path. 78: 69, 1972a.
  6. De Leeuw, Neth. J. Pl. Path. 78: 107, 1972b.
  7. Hannibal, Herbertia, La Jolla 9: 149, 1942.
  8. Herbas, Turrialba 14: 140, 1964.
  9. Holmes, Bot. Gaz. 86: 50, 1928.
  10. Holmes, Phytopathology 55: 504, 1965.
  11. Iwaki, Ann. phytopath. Soc. Japan 33: 237, 1967.
  12. Johnson, Phytopathology 41: 78, 1951.
  13. Kahn & Scott, Phytopathology 54: 360, 1964.
  14. Kunkel, Science, N.Y. 55: 73, 1922.
  15. Moore, Baileya 11: 15, 1963.
  16. Procenko & Procenko, Proc. 5th Conf. Czechosl. Pl. Virol. 1962: 241, 1964.
  17. Smith, Jl R. hort. Soc. 60: 304, 1935.
  18. Van Velsen, Papua New Guin. agric. J. 19: 13, 1967.