China detains two more PetroChina parent officials in graft probe
Reuters, December 16, 2013
www.reuters.com/article/2013/12/17/us-china-cnpc-corruption-idUSBRE9BG02W20131217
北京西城检察院：贪腐官员平均年龄45.8岁 (District procuratorate in Beijing: Officials investigated for corruption are younger and more educated nowadays, average age 45.8)
Beijing Evening News, December 17, 2013
http://news.163.com/13/1216/15/9G7NLS0N0001124J.html