1. Badami, Ann. appl. Biol. 46: 554, 1958.
2. Bhargava, Ann. appl. Biol. 38: 377, 1951.
3. Blencowe & Caldwell, Ann. appl. Biol. 36: 320, 1949.
4. Boedtker, Biochim. biophys. Acta 240: 448, 1971.
5. Bos & Jaspars, CMI/AAB Descriptions of Plant Viruses 46, 4 pp., 1971.
6. Christie & Edwardson, Monograph Ser. Fla agric. Exp. Stn No. 9: 89, 1977.
7. Clark, Peden & Symons, Virology 62: 434, 1974.
8. Crowley, Aust. J. biol. Sci. 7: 141, 1954.
9. Devergne, Meded. Faculteit Landbouwwetenschappen Rijks-Univ. Gent 40: 19, 1975.
10. Devergne & Cardin, Annls Phytopath. 2: 639, 1970.
11. Devergne & Cardin, Annls Phytopath. 5: 409, 1973.
12. Devergne & Cardin, Annls Phytopath. 7: 255, 1975.
13. Diaz-Ruiz & Kaper, Virology 80: 204, 1977.
14. Doolittle, Phytopathology 6: 145, 1916.
15. Dupont, Horn, Yot-Dauthy & Bové, C.r. Acad. Sci., Paris, D 267: 1013, 1968.
16. Fiers, Contreras, Duerinck, Haegeman, Iserentant, Merregaert, Min Jou, Molemans, Raeymaekers, Van den Berghe, Volckaert & Ysebaert, Nature, Lond. 260: 500, 1976.
17. Finch, Klug & Van Regenmortel, J. molec. Biol. 24: 303, 1967.
18. Francki, Virology 24: 193, 1964.
19. Francki, Virology 34: 694, 1968.
20. Francki, in Principles and Techniques in Plant Virology, ed. C. I. Kado & H. Agrawal, New York: Van Nostrand-Reinhold, p. 295, 1972.
21. Francki & Habili, Virology 48: 309, 1972.
22. Francki, Randles, Chambers & Wilson, Virology 28: 729, 1966.
23. Gerola, Bassi & Belli, Caryologia 18: 567, 1965.
24. Gonda & Symons, Virology 88: 361, 1978.
25. Gould & Symons, Nucleic Acids Res. 4: 3787, 1977.
26. Gould & Symons, Eur. J. Biochem. 91: 269, 1978.
27. Gould, Palukaitis, Symons & Mossop, Virology 84: 443, 1978.
28. Govier, Ann. appl. Biol. 45: 62, 1957.
29. Graham, Virology 3: 427, 1957.
30. Habili & Francki, Virology 57: 392, 1974a.
31. Habili & Francki, Virology 61: 443, 1974b.
32. Habili & Francki, Virology 64: 421, 1975.
33. Hatta & Francki, Virology 93: 265, 1979.
34. Hoggan, J. agric. Res. 47: 689, 1933.
35. Hollings, Ann. appl. Biol. 43: 86, 1955.
36. Hollings & Stone, CMI/AAB Descriptions of Plant Viruses 79, 4 pp., 1971.
37. Holmes, Virology 2: 611, 1956.
38. Honda & Matsui, Phytopathology 58: 1230, 1968.
39. Honda & Matsui, Phytopathology 64: 534, 1974.
40. Hull, Adv. Virus Res. 15: 365, 1969.
41. Jacrot, Chauvin & Witz, Nature, Lond. 266: 417, 1977.
42. Jagger, Phytopathology 6: 148, 1916.
43. Kaper, The Chemical Basis of Virus Structure, Dissociation and Reassembly (Frontiers of Biology Vol. 39), Amsterdam: North-Holland, 485 pp., 1975.
44. Kaper & Diaz-Ruiz, Virology 80: 214, 1977.
45. Kaper & Re, Virology 60: 308, 1974.
46. Kaper & Waterworth, Science, N.Y. 196: 429, 1977.
47. Kaper, Diener & Scott, Virology 27: 54, 1965.
48. Kaper, Tousignant & Lot, Biochem. biophys. Res. Comm. 72: 1237, 1976.
49. Kennedy, Day & Eastop, A Conspectus of Aphids as Vectors of Plant Viruses, London: Commonwealth Institute of Entomology, 114 pp., 1962.
50. Kohl & Hall, J. gen. Virol. 25: 257, 1974.
51. Komuro, Viruses in Vegetables. Tokyo: Seibundo Shinkosha, 300 pp., 1973.
52. Linnasalmi & Toiviainen, Ann. Agric. Fenn. (Ser. Phytopath.) 13: 79, 1974.
53. Lot & Kaper, Virology 74: 209, 1976.
54. Lot, Jonard & Richards, FEBS Letters 80: 395, 1977.
55. Lot, Marrou, Quiot & Esvan, Annls Phytopath. 4: 25, 1972.
56. Lot, Marchoux, Marrou, Kaper, West, Van Vloten-Doting & Hull, J. gen. Virol. 22: 81, 1974.
57. Lyons & Allen, J. Ultrastruct. Res. 27: 198, 1969.
58. Matthews, Intervirology, 12: 132, 1979.
59. Mink, CMI/AAB Descriptions of Plant Viruses 92, 4 pp., 1972.
60. Mossop & Francki, Virology 81: 177, 1977.
61. Mossop & Francki, Virology 86: 562, 1978.
62. Mossop & Francki, Virology 94: 243, 1979.
63. Mossop, Francki & Grivell, Virology 74: 544, 1976.
64. Neergaard, Seed Pathology, Vol. I, London: Macmillan, 839 pp., 1977.
65. Normand & Pirone, Virology 36: 538, 1968.
66. Peden & Symons, Virology 53: 487, 1973.
67. Phatak, Diaz-Ruiz & Hull, Phytopath. Z. 87: 132, 1976.
68. Pinder, Staynov & Gratzer, Biochemistry 13: 5373, 1974.
69. Price, Phytopathology 24: 743, 1934.
70. Price, Am. J. Bot. 27: 530, 1940.
71. Richards, Jonard, Jacquemond & Lot, Virology 89: 395, 1978.
72. Schmelzer, Phytopath. Z. 28: 1, 1957.
73. Schmelzer, CMI/AAB Descriptions of Plant Viruses 65, 3 pp., 1971.
74. Schwinghamer & Symons, Virology 79: 88, 1977.
75. Scott, Virology 20: 103, 1963.
76. Scott, Virology 34: 79, 1968.
77. Simons, Phytopathology 45: 217, 1955.
78. Simons, Phytopathology 47: 145, 1957.
79. Simons, Virology 9: 612, 1959.
80. Smith, A Textbook of Plant Virus Diseases (3rd Ed.), London: Longman, 684 pp., 1972.
81. Stanley & Bock, Biochemistry 4: 1302, 1965.
82. Symons, Mol. Biol. Reptr. 2: 277, 1975.
83. Takanami, Kubo & Imaizumi, Virology 80: 376, 1977.
84. Tolin, in The Atlas of Insect and Plant Viruses, ed. K. Maramorosch, New York: Academic Press, p. 303, 1977.
85. Tomlinson & Carter, Ann. appl. Biol. 66: 381, 1970.
86. Van Regenmortel, Virology 31: 391, 1967.
87. Van Regenmortel, Hendry & Baltz, Virology 49: 647, 1972.
88. Watson & Roberts, Proc. R. Soc. Ser. B. 127: 543, 1939.