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2. Mohnen, V.A. Mountain Cloud Chemistry Project: Wet, Dry and Cloud-water Deposition; EPA 600/3-89-003; U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards: Research Triangle Park, NC, 1988.
3. Schemenauer, R.S.; Winston, C. The 1986 Chemistry of High Elevation Fog (CHEF) Project. In Proceedings of the 81st Annual Meeting of the Air Pollution Control Association, Dallas, TX, 1988; pp. 1-16.
4. 1990 Integrated Assessment Report; U.S. National Acid Precipitation Assessment Program: Washington, DC, 1991.
5. Mountain Acid Deposition Program (MADPro) Cloud deposition to the Appalachian Mountains 1994–1999; Report EPA/600/R-01/016; U.S. Environmental Protection Agency, Office of Research and Development: Washington, DC, 2000.