2007 12 P51
2007 12 P52
2007 12 P53 P54
2007 12 P55
WikiPedia http://ja.wikipedia.org/wiki/%e9%ab%98%e6%9d%be%e4%b8%ad%e5%a4%ae %E5%95%86%E5%BA%97%E8%A1%97#.E5.86.8D.E9.96.8B.E7.99.BA
WikiPedia http://ja.wikipedia.org/wiki/%e6%a0%97%e6%9e%97%e5%85%ac%e5%9c%92
WikiPedia http://ja.wikipedia.org/wiki/%e9%ab%98%e6%9d%be%e5%9f%8e_%28%e8%ae %83%E5%B2%90%E5%9B%BD%29
http://www.cas.go.jp/jp/seisaku/gyoukaku/h26_fall/pdf/ronten/14-1sankounin.pdf