Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4

Mekhaldi F, Muscheler R, Adolphi F, Aldahan A, Beer J, McConnell JR, Possnert G, Sigl M, Svensson A, Synal H-A, Welten KC & Woodruff TE
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Mekhaldi, F., Muscheler, R., Adolphi, F., Aldahan, A., Beer, J., McConnell, J. R., Possnert, G., Sigl, M., Svensson, A., Synal, H. A., Welten, K. C., & Woodruff, T. E. (2015). Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4. Nature Communications, 6, 8611 (8 pp.). https://doi.org/10.1038/ncomms9611