Kohfeld, K. E. Research Group Paleo-Climatology, Dr. S. P. Harrison, Max Planck Institute for Biogeochemistry, Max Planck Society;
http://dx.doi.org/10.1029/1999PA900049 (Verlagsversion)
Kohfeld, K. E., Anderson, R. F., & Lynch-Stieglitz, J. (2000). Carbon isotopic disequilibrium in polar planktonic Foraminifera and its impact on modern and Last Glacial Maximum reconstructions. Paleoceanography, 15(1), 53-64. doi:10.1029/1999PA900049.