Scholz, D. Biogeochemistry, Max Planck Institute for Chemistry, Max Planck Society;
Jochum, K. P. Biogeochemistry, Max Planck Institute for Chemistry, Max Planck Society;
Wassenburg, J. A., Immenhauser, A., Richter, D. K., Niedermayr, A., Riechelmann, S., Fietzke, J., et al. (2013). Moroccan speleothem and tree ring records suggest a variable positive state of the North Atlantic Oscillation during the Medieval Warm Period. Earth and Planetary Science Letters, 375, 291-302.