1. The 2008/98/CE Directive of the European Parliament and of the Council from 19 November 2008 Regarding Waste and the Abrogation of Certain Directiveshttp://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32008L0098
2. Metallurgical recovery of metals from Waste Electrical and Electronic Equipment (WEEE) in PRC;Guo,2016
3. A Brief History of Household Recyclinghttps://www.citylab.com/city-makers-connections/recycling/
4. European Packaging Waste Management Systems—Main Report 2001http://ec.europa.eu/environment/waste/studies/packaging/epwms.pdf