1. Beijing People’s Congress, 2014. Regulation on Air Pollution Prevention and Mitigation in Beijing (in Chinese).
2. Caixin Online, 2011. The Ferocious Bad Fuels. 〈http://magazine.caixin.com/2011-09-16/100306060_all.html〉 (accessed October 2014) (in Chinese).
3. European Automobile Manufacturers Association (ACEA), Alliance of Automobile Manufacturers (Alliance), Truck and Engine Manufacturers Association (EMA), Japan Automobile Manufacturers Association (JAMA), 2013. Worldwide Fuel Charter (fifth edition).
4. General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ), Standardization Administration (SAC), 2006. GB 17930-2006 Gasoline for Motor Vehicles (in Chinese).
5. General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ), 2003. GB/T 19147-2003 Automobile Diesel Fuels (in Chinese).