1. Waste statistics in Europehttp://epp.eurostat.ec.europa.eu/
2. Impacto Socioeconómico del Mercado de la Eficiencia Energética en el Horizonte 2020,2011
3. Directive 2010/31/EC of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildingshttp://eur-lex.europa.eu/legal-content/ES/TXT/?uri=celex%3A32010L0031
4. European Commission, 2001. Competitiveness of the Construction Industry, A Report Drawn up by Working Group for Sustainable Construction with Participants from the European Commission, Member States and Industryhttp://www.etn-presco.net/library/SustConst EC-TaskGroup.pdf
5. Use of recycled construction and demolition materials in geotechnical applications: A review