Hegerl, Gabriele C. (2006). "Climate sensitivity constrained by temperature reconstructions over the past seven centuries". Nature440 (7087): 1029–1032. Bibcode:2006Natur.440.1029H. doi:10.1038/nature04679.
Hegerl, Gabriele C.; Crowley, Thomas J.; Hyde, William T.; Frame, David J. (2006), "Climate sensitivity constrained by temperature reconstructions over the past seven centuries", Nature, 440 (7087): 1029–1032, Bibcode:2006Natur.440.1029H, doi:10.1038/nature04679, PMID16625192
Hegerl, Gabriele C. (2006). "Climate sensitivity constrained by temperature reconstructions over the past seven centuries". Nature440 (7087): 1029–1032. Bibcode:2006Natur.440.1029H. doi:10.1038/nature04679.
Hegerl, Gabriele C.; Crowley, Thomas J.; Hyde, William T.; Frame, David J. (2006), "Climate sensitivity constrained by temperature reconstructions over the past seven centuries", Nature, 440 (7087): 1029–1032, Bibcode:2006Natur.440.1029H, doi:10.1038/nature04679, PMID16625192
Hegerl, Gabriele C.; Crowley, Thomas J.; Hyde, William T.; Frame, David J. (2006), "Climate sensitivity constrained by temperature reconstructions over the past seven centuries", Nature, 440 (7087): 1029–1032, Bibcode:2006Natur.440.1029H, doi:10.1038/nature04679, PMID16625192