1. Bos, Neth. J. Pl. Path. 76: 8, 1970a.
  2. Bos, CMI/AAB Descriptions of Plant Viruses 40, 4 pp., 1970b.
  3. Bos, CMI/AAB Descriptions of Plant Viruses 73, 4 pp., 1971.
  4. Conover, Phytopathology 38: 724, 1948.
  5. Debrot & De Rojas, Agronomia trop. 17: 75, 1967.
  6. De Vasconcelos, Anais. Inst. sup. Agron. Univ. téc. Lisb. 26: 181, 1964.
  7. Dunleavy, Quiniones & Krass, Phytopathology 60: 883, 1970.
  8. Galvez, Phytopathology 53: 388, 1963.
  9. Gardner & Kendrick, J. agric. Res. 22: 111, 1921.
  10. Heinze & Köhler, Phytopath. Z. 13: 207, 1940.
  11. Inouye, Rev. Pl. Prot. Res., Tokyo 2: 42, 1969.
  12. Kaiser, Danesh, Okhovat & Mossahebi, Pl. Dis. Reptr 52: 687, 1968.
  13. Kendrick & Gardner, J. agric. Res. 27: 91, 1924.
  14. Kennedy & Cooper, Phytopathology 57: 35, 1967.
  15. Koshimizu & Iizuka, Bull. Tohoku natn. agric. exp. Stn 27: 1, 1963.
  16. Lovisolo & Conti, Neth. J. Pl. Path. 72: 265, 1966.
  17. Matsumoto, Phytopathology 12: 295, 1922.
  18. Quantz, Phytopath. Z. 43: 79, 1961.
  19. Quiniones & Dunleavy, Pl. Dis. Reptr 54: 301, 1970.
  20. Ross, Phytopathology 57: 465, 1967.
  21. Ross, Pl. Dis. Reptr 52: 344, 1968.
  22. Ross, Phytopathology 59: 829, 1969.
  23. Ross, Phytopathology 60: 1798, 1970.
  24. Snyder, Phytopathology 32: 518, 1942.
  25. Walters, Pl. Dis. Reptr 47: 726, 1963.