1. Methods for detecting carcinogens and mutagens with the Salmonell/mammalian-microsome mutagenicity test;Ames;Mutat. Res.,1975
2. 2012 Public Transportation Fact Book;APTA,2012
3. Diesel and CNG Heavy-duty Transit Bus Emissions over Multiple Driving Schedules: Regulated Pollutants and Project Overview;Ayala,2002
4. Oxidation Catalyst Effect on CNG Transit Bus Emissions;Ayala,2003
5. Standard Operating Procedure for the Determination of Aromatic and Halogenated Compounds in Ambient Air by Capillary Column Gas Chromatography/mass Spectrometry: SOP MLD 058;CARB,2002