1. C. R. Nelson, M. A. D. Taylor, D. D. Davidson, and L. M. Peters, US Patent 2,579,601 (1951).
2. Y. Maki, K. Sato, A. Isobe, N. Iwasa, S. Fujita, M. Shimokawabe, and N. Takezawa, Appl. Catal. A: Gen., 170, 269–275 (1998).
3. Ethanol Industry News: Daily Breaking News on World Sugar and Ethanol Market Industry (August 18, 2011), http://www.sugarind.com/2011/08/world-top-20-ethanol-producing .
4. M. Bristow, “INEOS restarts synthetic ethanol unit at Grangemouth,” ICIS News. (June 5, 2009), Chemical Industry News & Intelligence ( http://www.ICIS.com ).
5. M. Bristow, “Two INEOS’s synthetic ethanol plants running at reduced rate,” ICIS News (August 7, 2009), Chemical Industry News & Intelligence ( http://www.ICIS.com ).