北京加强对赵紫阳故居的监视 重点防范上访者、异议人士和外国媒体 (Surveillance over Zhao Ziyang's Former Residence Heightened with Particular Attention toward Petitioners, Dissidents, and Foreign Media)
Radio Free Asia, October 16, 2011
http://www.rfa.org/mandarin/yataibaodao/yl-10162011172129.html
