1. Agrawal, Bos & Chessin, Phytopathology 52: 517, 1962.
  2. Agrawal, Chessin & Bos, Nature, Lond. 194: 408, 1962.
  3. Bercks, Phytopath. Z. 47: 301, 1963.
  4. Bercks, CMI/AAB Descriptions of Plant Viruses 41: 4 pp., 1971.
  5. Bercks & Brandes, Phytopath. Z. 47: 381, 1963.
  6. Brandes, Mitt. biol. BundAnst. Ld- u. Forstw. 110, 130 pp., 1964.
  7. Ford, Phytopathology 54: 615, 1964a.
  8. Ford, Phytopathology, 54: 1433, 1964b.
  9. Ford & Baggett, Pl. Dis. Reptr 49: 787, 1965.
  10. Hampton, Phytopathology 53: 1139, 1963.
  11. Johnson, Phytopathology 32: 103, 1942.
  12. Pratt, Can. J. Bot. 39: 655, 1961.
  13. Pratt, Phytopathology 56: 895, 1966.
  14. Pratt, Can. J. Pl. Sci. 47: 289, 1967.
  15. Pratt & Reichmann, Proc. Can. phytopath. Soc. 28: 13, 1961.
  16. Purcifull, Edwardson & Christie, Virology 29: 276, 1966.
  17. Purcifull & Shepherd, Phytopathology 54: 1102, 1964.
  18. Schlegel & Delisle, Virology 45: 747, 1971.
  19. Smith & Schlegel, Phytopathology 54: 1273, 1964.
  20. Welsh, Stace-Smith & Brennan, Phytopathology 53: 50, 1973.
  21. Wetter, Arch. Mikrobiol. 37: 278, 1960.