1. Statistical Yearbook 2004; Central Bureau of Statistics of Norway: Oslo, Norway, 2004; p 528.
2. Environmental Health Criteria 13. Carbon Monoxide; World Health Organization: Geneva, Switzerland, 1979.
3. Fenchel, T.; King, G.M.; Blackburn, T.H. Bacterial Biogeochemistry: The Ecophysiology of Mineral Cycling 2nd ed; Elsevier Academic Press: London, U.K., 1998.
4. Prather, M.J.R.; Derwent, D.; Ehhalt, P.; Fraser, E.; Sanhueza, E.; Zhou, X. Other Trace Gases and Atmosphere Chemistry. In Climate Change 1994; Houghton, J.T.; Meira Filho, L.G.; Bruce, J.; Lee, H.; Callender, B.A.; Haites, E.; Harris, N.; Maskell, K., Eds; Cambridge University Press: Cambridge, U.K., 1995; pp 73-126.
5. Integrated Pollution Prevention and Control. Draft Reference Document on Best Available Techniques for Waste Incineration; European Commission: Brussels, Belgium, 2004.