1. ERS http://www.ers.usda.gov/Data/FeedGrains/Yearbook/FGYearbookTable04.pdf
2. ERS http://www.ers.usda.gov/Data/Wheat/Yearbook/WheatYearbookTable04.pdf
3. ERS http://www.ers.usda.gov/Briefing/Rice/data.htm
4. ERS http://www.ers.usda.gov/Data/FeedGrains/Yearbook/FGYearbookTable31.pdf
5. Processing and dietary fiber ingredient applications of corn bran;Burge;Cereal Foods World,1989