The Guardian, November 09, 2011
http://www.guardian.co.uk/artanddesign/2011/nov/09/ai-weiweis-mother-hounding-son
Related information:
艾未未的母亲要抵押房产救儿子
Ai Weiwei’s Mother to Mortgage Her House to Help Son
Human Rights in China, November 07, 2011
CH: http://www.hrichina.org/cn/content/5621
EN: http://www.hrichina.org/content/5623