カナダ紙・ナショナルポストの記事「Inside Pyongyang's gulags」
Since Kim Jong-un’s succession, it is believed the number of political prisoners being sent to camps is once again on the rise. The National Post’s graphics team takes a look.
(注:PDF)
http://nationalpostnews.files.wordpress.com/2012/02/na0204_koreagulag.pdf