References
- Berg, A. (1981): Malnourished people,a policy view. Washington, D.C.: World Bank.
- Bradley, G.A. (1971): Fruits and vegetables as world sources of vitamin A and C. Hortscience 7, 141–142.
- Kelly,J.F. (1971): Horticultural crops as sources of proteins and amino acids. Hortscience 7, 149–150.
- Sommer, A. (1982): Nutritional blindness: xerophthalmia and keratomalacia, Chapter 11. London: Oxford University Press.