1. Blok, K. et al. Bridging the Emissions Gap. A UNEP Synthesis Report (UNEP, 2011); available at
http://www.unep.org/pdf/UNEP_bridging_gap.pdf
.
2. Höhne, N. et al. Clim. Policy 12, 356–377 (2012).
3. http://www.climateactiontracker.org
4. UNFCCC Establishment of an Ad Hoc Working Group on the Durban Platform for Enhanced Action Draft decision -/CP.17 (UNFCCC, 2011); available via
http://go.nature.com/tg5UMG
.
5. Pacala, S. & Socolow, R. Science 305, 968–972 (2004).