1. Fuel ethanol and agriculture: An economic assessment;US Department of Agriculture,1986
2. Ethanol, a major source of octane number improvement;Bailey,1986
3. The role of MTBE and other oxygenates under lead phase down;Peil,1986
4. Costs and benefit of reducing lead in gasoline;Environmental Protection Agency;EPA-230-03-84-005,1984
5. Lead phasedown - major contributor to evolutionary oil industry change;Unzelman,1985