http://www.dpj.or.jp/news/dpjnews.cgi?indication=dp&num=13316

http://www.jiji.com/jc/c?g=soc_30&k=2008052200073

http://www.nikkei.co.jp/news/seiji/20080522AT3S2102V22052008.html http://s02.megalodon.jp/2008-0523-1742-28/www.nikkei.co.jp/news/seiji/20080522AT3S2102V22052008.html

http://mainichi.jp/select/seiji/news/20080523k0000m010057000c.html http://s01.megalodon.jp/2008-0523-1740-57/mainichi.jp/select/seiji/news/20080523k0000m010057000c.html