http://nabc.cals.cornell.edu/pubs/nabc_19/NABC19_5Plenary2_Ramey.pdf
Butanol: The Other Alternative Fuel

http://www.afdc.energy.gov/pdfs/843183.pdf
Production of Butyric Acid and Butanol from Biomass - DOE Final Report

http://www.utsandiego.com/uniontrib/20050803/news_lz1c03ramey.html
August 2005 With a dream in the gas tank, he headed west -  By Scott LaFee