62ճƻǼ夲줿֥ǸŤκʪפȤ
http://www.asahi.com/science/news/JJT200606020004.html
http://headlines.yahoo.co.jp/hl?a=20060602-00000013-kyodo-int
ʤɤʤɡ
http://www.sciencemag.org/cgi/content/abstract/312/5778/1372
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