1. Material Safety Data Sheet for Aviation Gasoline 100 LL, Esso Italy,1993.
2. Material Safety Data Sheet for Motor Gasoline, Esso Italy,1995.
3. European Community Directive 98/70/CEE,1998.
4. EN 228—Automotive Fuels—Unleaded Petrol—Requirements and Test Methods—1998.
5. EN 237—Liquid Petroleum Products—Petrol—Determination of Low Lead Concentration by AAS.