http://gigazine.net/news/20120220-tetris-140bytes/

http://yfrog.com/es2rfohj

http://science.slashdot.jp/story/12/02/22/0758228/%E4%B8%96%E7%95%8C%E5%88%9D%E3%81%AE%E4%BA%BA%E5%B7%A5%E8%82%89%E3%83%90%E3%83%BC%E3%82%AC%E3%83%BC%E3%80%81%E4%BB%8A%E7%A7%8B%E3%81%AB%E3%82%82%E5%AE%9F%E7%8F%BE

http://mainichi.jp/seibu/news/20120225sog00m040005000c.html

http://www.toben.or.jp/message/libra/pdf/2012_02/p34.pdf

http://headlines.yahoo.co.jp/hl?a=20120224-00000086-mailo-l05

http://www.zasshi-online.com/Magazine/ProductDetail/Category?code=NewsMagazine&page=1&sort=1&dcode=Nikkan_Gendai_Sougo1120224&dpage=1