1. Angel S (2011) Making Room for a Planet of Cities. Policy Focus Report/Code PF027, Lincoln Institute of Land Policy.
2. Downscaling drivers of global environmental change: Enabling use of global SRES scenarios at the national and grid levels;DP Van Vuuren;Global Environmental Change,2007
3. Europe’s population at a turning point;W Lutz;Science,2003
4. United Nations (2011) World Population Projects. The 2011 revision. Population database, http://esa.un.org/UNPP/.
5. European Environmental Agency-EEA (2001) Indicator Fact Sheet Signals 2001– Chapter ‘Households’. Copenhagen.