1. U.S. EPA. Expanding and Updating the Master List of Compounds Emitted by Mobile Sources - Phase III: Final Report. 2006, EPA420-R-06-005;http://www.epa.gov/otaq/regs/toxics/420r06005.pdf.
2. U.S. EPA. Technical Support Document: Control of Emissions of Hazardous Air Pollutants from Motor Vehicles and Motor Vehicle Fuels. 2000, EPA420-R-00-023;http://www.epa.gov/otaq/regs/toxics/r00023.pdf.
3. International Agency for Research on Cancer. Benzo[a]pyrenemonograph; http://monographs.iarc.fr/ENG/Monographs/vol100F/mono100F-14.pdf.
4. Sampling of vehicle emissions for chemical analysis and biological testing.