Sluijs, A, Schouten, S, Donders, TH, Schoon, PL, Röhl, U, Reichart, GJ, Sangiorgi, F, Kim, JH, Sinninghe Damsté, JS and Brinkhuis, H (2009) Warm and wet conditions in the Arctic region during Eocene Thermal Maximum 2. Nature Geosciences, 2. 777-780. doi:10.1038/NGEO668