1. Consolidation question;Abramowitz;Resource Recycling,2010
2. Recycling of plastic: accounting of greenhouse gases and global warming contributions;Astrup;Waste Management & Research,2009
3. Materials recycling and processing in the United States: 2007–2008 yearbook and directory;Berenyi,2008
4. MRF designs around single stream recycling;Biddle;BioCycle,1998
5. Waste management;Bogner,2007