发改委发布2012年中国资源综合利用年度报告 (National Development and Reform Commission (NDRC) Issues First Annual Report on Resource Use)
China News Service, April 08, 2013
http://www.bjnews.com.cn/finance/2013/04/08/257124.html
China's Ambitious Quest for Shale Gas
British Broadcasting Corporation, April 05, 2013
http://www.bbc.co.uk/news/world-asia-22023464