1. The Oil Companies European Organisation for Environmental and Health Protection, Assessment of the Energy Balances and Economic Consequences of the Reduction and Elimination of Lead in Gasoline;CONCAWE;Report No. 11/83,1983
2. Council Directive 85/210/EEC. No. L96;Official Journal of the European Communities,1985
3. UK Blood Lead Monitoring Programme 1984–1987;Department of the Environment,1990
4. Lead in Gasoline: Environmental Issues;International Lead Zinc Research Organisation (ILZRO),1991