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2. Recommendations of the Expert Panel on the EPA Speciation Network-Final Summary. http://www.epa.gov/ttnamti1/files/ambient/ PM25/spec/lvpanel.pdf (accessed April 2000).
3. Saxena, P.; Van Loy, M.; Babich, P.; Allen, G.; Koutrakis, P. Composition of Fine Particles in Urban U.S.: East-West and Seasonal Differences from 1996-1998 Experiments. Presented at the 18th Annual AAAR Conference, Tacoma, WA, October 1999; Paper 7B1.
4. Van Loy, M.; Saxena, P.; Babich, P.; Lawrence, J.; Allen, G.; Koutrakis, P. Analysis of Quartz Filter Sampling Techniques for PM2 5 Carbon in Six Cities; J. Air & Waste Manage. Assoc. submitted for publication, 2000.
5. Fed. Regist., 1997, Section 8.2, 40 CFR, Part 50.