1. United Nations Conference on Environment and Development, Rio de Janeiro, Brazil. Agenda 21: Programme of Action for Sustainable Development. New York: United Nations, 1992.
2. Indicators of Sustainable Production;Veleva;Journal of Cleaner Production,2001
3. SustainAbility, Team Spotlights Top 50 Corporate Sustainability Reports. GreenBiz, November 15, 2000, http://www.greenbiz.com/news/news_third.cfm?NewsID=13397
4. Ranganathan, J. Sustainability Rulers: Measuring Corporate Environmental and Social Performance. Sustainable Enterprise Perspectives, World Resource Institute: Washington, DC, 1998. http://www.wri.org/meb/pdf/janet/pdf
5. The transformation imperative: achieving market dominance through radical change;Vollmann,1996