1. Anonymous, 1985. FAO Production Yearbook 1984, Vol. 38. FAO, Rome, 326 pp.
2. Anonymous, 1987. Improvement of root and tuber crops by induced mutations. IAEA, Vienna, Tecdoc 411, 48 pp.
3. Van Harten, A.M., 1979. Mutation breeding in root and tuber crops. In: Induced Mutations for Crop Improvement in Africa. Proc. Regional Seminar, Ibadan, Nigeria, 1978. Tech. Doc., IAEA, Vienna, pp. 115–124.
4. Breeding work on tapioca (cassava) and a few other tropical tuber crops;Abraham,1970
5. Anonymous, 1978. Taiwan Sugar Research Institute: Annu. Rep., 1976–77, p. 65.