Hayakawa, H.; et al. (2017). "Historical Auroras in the 990s: Evidence of Great Magnetic Storms : Solar Physics : Springer". Solar Physics. 292. arXiv:1612.01106. doi:10.1007/s11207-016-1039-2.
doi.org
Miyake, F.; et al. (2013). "Another rapid event in the carbon-14 content of tree rings : Nature Communications : Nature Publishing Group". Nature Communications. 4: 1748. doi:10.1038/ncomms2783. PMID23612289.
Hayakawa, H.; et al. (2017). "Historical Auroras in the 990s: Evidence of Great Magnetic Storms : Solar Physics : Springer". Solar Physics. 292. arXiv:1612.01106. doi:10.1007/s11207-016-1039-2.
nih.gov
ncbi.nlm.nih.gov
Miyake, F.; et al. (2013). "Another rapid event in the carbon-14 content of tree rings : Nature Communications : Nature Publishing Group". Nature Communications. 4: 1748. doi:10.1038/ncomms2783. PMID23612289.