1. Hutchinson J, Dalziel JM (1958) Flora of West Tropical Africa. Vol. 7, part 2, p 564. London: Crown Agents for Overseas Government.
2. Evans IM, Boulter D (1974) Amino acid composition of seed meals of yam bean (Sphenostylis stenocarpa) and lima bean (Phaseolus lunatus). J Sci food Agric 25(8): 919?922.
3. Okigbo BN (1973) Introducing the yam beanSphenostylis stenocarpa (Hochst ex A. Rich) Harms. In Proceedings of the first IITA Grain Legume Improvement Workshop, October 29?November 2, 1973, Ibadan, pp 224?238. Ibadan, Nigeria: International Institute of Tropical Agriculture.
4. Onyeike EN, Abbey BW, Anosike EO (1991) Kinetics of heat inactivation of trypsin inhibitors from the African yam bean (Sphenostylis stenocarpa). Food Chem 40: 9?23.
5. Ezueh MI (1984) African yam bean as a crop in Nigeria. World Crops 36(6): 199?200.