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- United States Environmental Protection Agency (EPA), March 2012, Report to Congress on Black Carbon
- United Nations Environment Programme (UNEP) and World Meteorological Organization (WMO), 2011, Integrated Assessment of Black Carbon and Tropospheric Ozone.
- U.S. EPA, Report to Congress on Black Carbon (2012).
- U.S. EPA, Reducing Black Carbon Emissions in South Asia: Low Cost Opportunities (2012).