1. World Business Council for Sustainable Development WBCSD, EEB Manifesto magazine Energy Efficiency in Buildings – An insight from companies, WBCSD publications library, p.2, April 2014.
2. World Business Council for Sustainable Development WBCSD, Energy Efficiency of Building, Business realities and opportunities, July 2008.
3. F. Riesser, Comparative Life Cycle Assessment of Texlon and glass cladding systems for roof applications, European School of Materials Science and Engineering EEIGM, Nancy, France, August 2011.
4. GaBi 4: Software und Datenbank zur Ganzheitlichen Bilanzierung. LBP, Universität Stuttgart und PE International, 2010.
5. DIN EN ISO 14044:2006-10, Environmental management - Life cycle assessment - Requirements and guidelines (ISO 14044:2006); German and English version EN ISO EN ISO 14044:2006.