Höhne, N, Kejun, J, Rogelj, J, Segafredo, L, da Motta, R S, Shukla, P R, Fenhann, J V, Hansen, J I, Olhoff, A, Pedersen, M B & Christensen, J M 2012, The Emissions Gap Report 2012 : A UNEP Sythesis Report . United Nations Environment Programme . < http://www.unep.org/publications/ebooks/emissionsgap2012/ >