1. Municipal solid waste in the United States 2007 Facts and Figures; EPA530-R-08-010; U.S. Environmental Protection Agency: Washington, D.C. 2008.
2. Human Activity and the Environment: Annual Statistics 2005; catalogue no. 16-201-XPE; Statistics Canada, Environmental Accounts and Statistics Division, System of National Accounts: Ottawa, Ontario, Canada, 2005; available athttp://www.statcan.gc.ca/pub/16-201-x/16-201-x2005000-eng.pdf(accessed January 8, 2010).
3. Submission to the Productivity Commission Inquiry into Waste Generation and Resource Efficiency; Australian Government Department of the Environment, Water, Heritage and the Arts 2006; available athttp://www.environment.gov.au/settlements/publications/waste/pubs/deh-submission.pdf(accessed January 8, 2010).
4. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990−2007; U.S. Environmental Protection Agency: Washington, D.C. 2009; EPA 430-R-09-004.