1. UNDESAP, World Population Prospects: The 2012 Revision, Press Release (13 June 2013): “World Population to Reach 9.6 Billion by 2050 With Most Growth In Developing Regions, Especially Africa”, (June), 2013, pp.1–4. Available at: http://esa.un.org/unpd/wpp/Documentation/pdf/WPP2012_Press_Release.pdf (accessed July 15, 2014).
2. W. Crane, F. Krausmann, N. Eisenmenger, S. Giljum, P. Hennicke, R. Kemp, P.R. Lankao, B.S. Manalang, S. Sewerin, UNEP (2011) Decoupling Natural Resource Use and Environmental Impacts from Economic Growth. A Report of the Working Group on Decoupling to the International Resource Panel. International Resource Panel ed. United Nations Environment Programme, 2011.
3. COM (2011) 21 Resource-Efficient Europe—Flagship Initiative Under The Europe 2020 Strategy. COM (2011), 21. [Online] Available from: http://ec.europa.eu/resource-efficient-europe/pdf/resource_efficient_europe_en.pdf (accessed July 15, 2014).
4. COM (2014) 398 Final Towards A Circular Economy: A Zero Waste Programme For Europe COM(2014) 398 Final. [Online] Available from: http://ec.europa.eu/transparency/regdoc/rep/1/2014/EN/1-2014-398-EN-F1-1.Pdf (accessed July 17, 2014).
5. N. Watson, P. Walker, A. Wylie, C. Way, Evaluating the barriers to entry for non-conventional building materials, in: Proceedings of IABSE Conference Cairo 2012 Cairo, vol. 98, 2012, pp. 9–16.