1. Brown, L. R. (2002). “Eco-Economy, Building an Economy for the Earth ( Translated to Japanese by Katsuya Fukuoka).” Ienohikari Kyokai.
2. Draft International Standard ISO/DIS 15686-6. (2002). “Building and Constructed Assets - Service Life Planning - Part 6: Guideline for Considering Environmental Impacts.”
3. fib. (2004). “Environmental Design.” Bulletin 28.
4. Humphreys, K. and Mahasenan, M. (2002). “Toward a Sustainable Cement Industry, Climate Change Sub-Study 8”, World Business Council for Sustainable Development.
5. Jahren, P. (2003). “Greener Concrete-What are the options? The CO2 case.” STF22A03610 Report, SINTEF.