上海访民市中心拉横幅抗议政府 上访多年问题仍未解决 (Shanghai Petitioners Take to Street: “Even Xi Jinping, as Shanghai mayor, could not help”) Radio Free Asia, February 12, 2013 http://www.rfa.org/mandarin/yataibaodao/renquanfazhi/yf1-02122013152727.html