1. International Vocabulary of Metrology (VIM) (2007) ISO/IEC Guide 99
2. White paper on internationally compatible biofuel standards (2007) http://ec.europa.eu/energy/res/biofuels_standards/doc/white_paper_ icbs_final.pdf . 31 Dec 2007
3. European Directive 98/70/EC (amended by 2003/17/EC). http://ec.europa.eu/environment/air/transport/pdf/com_2007_18_en.pdf
4. EN 15376 (2007) Automotive fuels—ethanol as a blending component for petrol—requirements and test methods
5. ASTM D 4806 standard specification for denatured fuel ethanol for blending with petrol for use as automotive spark ignition engine fuel