http://gigazine.net/news/20110210_cassette_tape_mp3/

http://gigazine.net/news/20110210_puchicrime_internet/

http://www.hokkaido-365.com/news/2011/02/post-1651.html

http://www.hosokai.or.jp/item/annai/shinkan/shinkan.html

http://headlines.yahoo.co.jp/hl?a=20110210-00000936-yom-soci

http://headlines.yahoo.co.jp/hl?a=20110210-00000613-san-soci

http://headlines.yahoo.co.jp/hl?a=20110211-00000069-yom-soci

http://www.asahi.com/national/update/0210/TKY201102100202.html

http://www.sankei-kansai.com/2011/02/11/20110211-049512.php

http://news.goo.ne.jp/article/asahi/nation/K2011021005670.html