Agence France-Presse, April 7, 2012
http://news.yahoo.com/exiled-tiananmen-leaders-ask-visit-china-005132017.html
Related information:
王丹等人要求中国政府允许他们回国看看
Wang Dan and Others Appeal for Permission to Visit China
Human Rights in China, April 6, 2012
CH: http://www.hrichina.org/cn/content/5949
EN: http://www.hrichina.org/content/5948
