1. K. Weissermel and H.-J.Arpe, Industrial Organic Chemistry, VCH, Weinheim, 3rd edn, 1997
2. International Energy Outlook 2006, Energy Information Administration, Office of Integrated Analysis and Forecasting, U.S. Department of Energy, Washington DC, 2006 (http://www.eia.doe.gov/oiaf/ieo/index.html)
3. See, for instance: Directive 2003/30/EC of the European Parliament and of the Council of 8 May 2003 on the promotion of the use of biofuels or other renewable fuels for transport, Official Journal of the European Union, 17 May 2003
4. P. J. Squillace , D. A.Pope and C. V.Price, Occurrence of the gasoline additive MTBE in shallow ground water in urban and agricultural areas, U.S. Geological Survey, National Water Quality Assessment Program, Rapid City, SD, USA, 1995 (http://sd.water.usgs.gov/nawqa/pubs/factsheet/fs114.95/fact.html)
5. D. M. T. Newsham , in Science and Practice of Liquid–Liquid Extraction, ed. J. D. Thornton, Clarendon Press, Oxford, 1992, vol. 1