1. Commercial hydroponics—facts and figures;Bentley,1959
2. Folate deficiency causes uracil misincorporation into human DNA and chromosome breakage: Implications for cancer and neuronal damage;Blount;Proceedings of the National Academy of Sciences of the United States of America,1997
3. A quantitative assessment of plasma homocysteine as a risk factor for vascular disease—probable benefits of increasing folic acid intakes;Bousey;Journal of the American Medical Association,1995
4. Bullock, N. R., Dainty, J., Hart, D., Finglas, P., & Powers, H. J. (2005). The bioavailabilitv of riboflavin from foods. Proceedings of the Nutrition Society, 64 OCA/B, 86A.
5. Effects of blanching, freezing and storage on folacin content of spinach;Chen;Nutrition Reports International,1983