- Al-Fadhil, F.H. and Al- Ani, R.A. (1987). J. Agric. Water Resou. Res.-Plant Production, 6: 99-114.
- Capoor, S.P. et al. (1985). Indian Phytopath., 38: 152-154.
- Gupta, Y. and Chowfla, S.C. (1990). Indian Phytopath., 84: 434-436.
- Hobbs, H.A. et al. (1987). Plant Dis., 71: 747-749.
- Klein, R.E. et al. (1988). Plant Dis., 72: 301-302.
- Khetarpal, R.K et al. (1994). Indian J. Virol., 10: 13-16.
- Muniyappa, V. (1970). Madras Agric. J., 63: 69-70.
- Omunyin, M. et al. (1988). Trop. Agric. (Trinidad), 65: 166-168.
- Parthasarathy, V.A. (1993). In: Vegetable Crops: (T.K Bose et al., eds.). Naya Prakash Publishers, Calcutta, India, pp. 581-602.