http://www.itmedia.co.jp/enterprise/articles/0502/11/news012.html

http://www.nikkei.co.jp/news/shakai/20050210STXKE048010022005.html

http://www.excite.co.jp/News/society/20050209075419/Kyodo_20050209a428010s20050209075424.html

http://headlines.yahoo.co.jp/hl?a=20050209-00000011-kyodo-bus_all

http://www.e-bellnet.com/special/tec/tec_0502.html

http://www.e-bellnet.com/special/tec/tec_0409.html

http://www.e-bellnet.com/special/tec/tec_0501.html

http://www.e-bellnet.com/special/tec/tec_0412.html

http://nikkeibp.jp/wcs/leaf/CID/onair/jp/rep02/357763

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http://www.itmedia.co.jp/mobile/articles/0501/31/news042.html

http://k-tai.impress.co.jp/cda/article/news_toppage/22412.html