Jungclaus, Johann H. Director’s Research Group OES, The Ocean in the Earth System, MPI for Meteorology, Max Planck Society;
http://www.nature.com/ngeo/journal/v10/n4/full/ngeo2926.html (Verlagsversion)
Buntgen, U., Myglan, V. S., Ljungqvist, F. C., McCormick, M., Di Cosmo, N., Sigl, M., et al. (2017). Reply to 'Limited Late Antique cooling' / S. Helama, P. D. Jones & K. R. Briffa (Nature Geoscience 10, 242–243 (2017) doi:10.1038/ngeo2926). Nature Geoscience, 10, 243. doi:10.1038/ngeo2927.