1. Berkhout F, M Eames and J Skea (1998) Environmental Futures Scoping Study: Final Report. SPRU—Science and Technology Policy Research). Brighton, UK
2. Berr (2007) Energy Market Outlook. Department for Business Enterprise and Regulatory Reform. Ofgem. p 121
3. Blakely EJ and MG Snyder (1998) Separate places: Crime and security in gated communities. In: M. Felson and R.B. Peiser eds.), Reducing crime through real estate development and management, Washington, D.C.: Urban Land Institute, pp 53–70
4. Christozov D (1997) Montreal underground: a case for indoor city planning. Conference of the Associated research Centers for Urban Underground Space, Montreal
5. Cosgrove W, Rijsberman F (2000) World Water Vision: making water everybody’s business. London: Earthscan