1. Global Waste Management Outlook,2015
2. Proposal for a Directive of the European Parliament and of the Council Amending Directive 2008/98/EC on Wastehttp://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:52015PC0595
3. Factsheet: Circular Economy: Closing the Loop. From Waste to Resourceshttps://ec.europa.eu/commission/sites/beta-political/files/circular-economy-factsheet-waste-to-resources_en.pdf
4. Circular Economy. An Alternative Model for Economic Developmenthttp://www.unep.org/chinese/documents/final_circulareconomy_wholedoc.pdf