Steinhilber F. et al.,
“9,400 years of cosmic radiation and solar activity from ice cores and tree rings”,
PNAS, doi:10.1073/pnas.1118965109, 109, 5967-5971, 2012.
書籍/論文
Steinhilber F. et al.,
“9,400 years of cosmic radiation and solar activity from ice cores and tree rings”,
PNAS, doi:10.1073/pnas.1118965109, 109, 5967-5971, 2012.