1. IEA 2012. Energy prices and taxes, 4th quarter 2012. [Online]. Available at http://www.cne.es/cgi-bin/BRSCGI.exe?CMD=VEROBJ&MLKOB=696373432929 (accessed 26 September 2013, verified 17 December 2013).
2. IPCC 2007a. Climate change 2007: Working group I: The physical science basis. [Online]. Available at http://www.ipcc.ch/publications_and_data/ar4/wg1/en/contents.html (accessed 25 March 2013, verified 17 December 2013).
3. IPCC 2007b. Climate change 2007: Working group II: Impacts, adaptation and vulnerability. [Online]. Available at http://www.ipcc.ch/publications_and_data/ar4/wg2/en/contents.html (accessed 25 March 2013, verified 17 December 2013).
4. IPCC 2012. Managing the risks of extreme events and disasters to advance climate change adaptation. Special report. [Online]. Available at http://ipcc-wg2.gov/SREX/images/uploads/SREX-All_FINAL.pdf (accessed 25 March 2013, verified 17 December 2013).
5. Japan Meteorological Agency 2012. Climate change monitoring report 2011. [Online]. Available at http://www.data.kishou.go.jp/climate/cpdinfo/monitor/2011/pdf/ccmr2011_all.pdf (accessed 25 March 2013, verified 17 December 2013).