1. United Nations (1992). Agenda 21, Programme of Action for Sustainable Development.
2. Norwegian Ministry of the Environment (1994). Report of the Symposium on Sustainable Consumption.
3. United Nations (1994). Meeting Report E/CN.17/1994/14-General Discussion on Progress in the Implementation of Agenda 21, Economic and Social Council, Appendix.
4. OECD (Organization for Economic Co-Operation and Development) (1999). Final Report COM/ENV/CERI(99)64, Education and Learning for Sustainable Consumption, Economic and Social Council.
5. Indicators of sustainable production: Framework and methodology;Veleva;J. Clean. Prod.,2001