1. Besiou , M. L. N. van Wassenhove 2012 IPR position papers and case studies for different industrial sectors www.4980.timewarp.at/sat/ZeroWIN/pdf_secure/D1.4%20-%20IPR%20Position%20papers.pdf
2. BIOIS 2011 BIO Intelligence Service: Study on photovoltaic panels supplementing the impact assessment for a recast of the WEEE Directive http://ec.europa.eu/environment/waste/weee/pdf/Study%20on%20PVs%20Bio%20final.pdf
3. EC (European Commission) 1994 Directive 94/62/EC of the European Parliament and of the Council of 20 December 1994 on packaging and packaging waste
4. EC (European Commission) 2003a Directive 2002/96/EC of the European Parliament and of the Council of 27 January 2003 on WEEE