1. United Nations, Agenda 21: United Nations Conference on Environment and Development, Rio de Janeiro, Brazil, 3–4 June 1992, United Nations Department of Public Information, New York 1993.
2. United Nations, Johannesburg Plan of Implementation. Available at 〈http://WWW.un.org/esa/sustdev/documents/docs.htm〉 in November 2003.
3. A. Carlsson-Kanyama, K.-H. Dreborg, B.R. Enkhorn, R. Engström, H.J. Falkena, G. Gatersleben, G. Henriksson, R. Kok, D. Padovan, F. Rigoni, E. Sto, H. Throne-Holst, L. Tite, G. Vitterso, Images of everyday life in the future sustainable city: experiences of back-casting with stakeholders in five European cities. Fms Report No. 182, Stockholm 2003.
4. Indirect and direct energy requirements of city households in Sweden- options for reduction lessons from modelling;Carlsson-Kanyama;International Journal of Industrial Ecology,2005
5. J. Robinson, Energy backcasting: a proposed method of policy analysis, Energy Policy December 1982.