British Broadcasting Corporation, November 15, 2011
http://www.bbc.co.uk/zhongwen/simp/chinese_news/2011/11/111115_aiweiwei_tax.shtml
Related news:
Lawyer: Tax Authorities Impeding Ai Weiwei Appeal
Associated Press, November 14, 2011
http://www.taiwannews.com.tw/etn/news_content.php?id=1758465