2006-01-07 任天堂「DS」が世界販売1300万台 game http://www.arts.or.jp/cgi-bin/topics_index.cgi?YEAR=2006&MONTH=1&ID=4033 http://www.asahi.com/business/update/0106/116.html http://it.nikkei.co.jp/digital/news/index.aspx?i=2006010508030ea