1. Federal Register. National Ambient Air Quality Standards for Particulate Matter; Final Rule; U.S. Environmental Protection Agency, July 18,1997.
2. Federal Register. Proposed Regional Haze Regulations for Protection of Visibility in National Parks and Wilderness Areas. U.S. Environmental Protection Agency, July 31, 1997.
3. Air Quality Criteria for Particulate Matter; EPA/600/P-95-001aF-cF; U.S. Environmental Protection Agency, Office of Research and Development, U.S. Government Printing Office: Washington, DC, 1996.
4. Aerometric Information Retrieval System (AIRS)-Total Suspended Particulate (TSP) Data for Tennessee, 1983-1991; U.S. Environmental Protection Agency.
5. National Air Quality and Emissions Trends Report - 1993; U.S. Environmental Protection Agency, 1994.