1. United States Congress. The Clean Air Act; USC Title 42, Chapter 85, Section 7401, 1970.
2. Smith, R.; Smith, T. Elements of Ecology; Addison, Wesley, Longman: San Francisco, 2000.
3. Chemicals in the Environment: 1-Butanol; U.S. Environmental Protection Agency, Office of Pollution Prevention and Toxics: Washington, DC, 1994.
4. National Air Quality and Emissions Trends Report; U.S. Environmental Protection Agency: Washington, DC, 1998.
5. Groenestijin, J.W.V.; Hesselink, G.M. Biotechniques of Air Pollution Control; Biodegradation 1993, 4, 283-301.