1. Abraham, K. & Gopinathan Nair, P., 1990a. Floral biology and artificial pollination in Dioscorea alata L. Euphytica 48: 45?51.
2. Abraham, K. & Gopinathan Nair, P., 1990b. Vegetative and pseudogamous parthenocarpy in Dioscorea alata L. J. Root Crops 16: 58?60.
3. Abraham, K., Nair, S. G. & Sreekumari, M. T., 1989. White yam, Dioscorea rotundata Poir., dwarf type. Trop. Agriculture, Trinidad 66 (2): 184?186.
4. Abraham, K., Nair, S. G., Sreekumari, M. T. & Unnikrishnan, M., 1986. Seed set and seedling variation in greater yam (Dioscorea alata L.). Euphytica 35: 337?343.
5. Bai, K. V. & Jos, J. S., 1986. Female fertility and seed set in Dioscorea alata L. Trop. Agriculture, Trinidad 63 (1): 7?10.