1. China’s Coal: Demand, Constraints, and Externalities;Aden,2009
2. Atmospheric Pollution Prevention Regulations (2015). https://www.google.com.hk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiJjKKDoMTWAhVU62MKHY_9B4wQFggsMAA&url=http%3A%2F%2Fwww.mep.gov.cn%2Fhome%2Fztbd%2Frdzl%2Fdqst%2Fmbzrs%2F201504%2FP020150422605114100110.pdf&usg=AFQjCNH47g7DBRC-jixZ5QI7IxGBTi1EEQ.
3. Beijing 2012–2020 Measures for the Control of Atmospheric Pollution (2012). http://zhengwu.beijing.gov.cn/gzdt/gggs/t1225355.htm.
4. Beijing Five-year Action Plan for Clean Air (2013). http://zhengwu.beijing.gov.cn/ghxx/qtgh/t1324558.htm.
5. Beijing Atmospheric Pollution Prevention Regulations (2014). https://baike.baidu.com/item/%E5%8C%97%E4%BA%AC%E5%B8%82%E5%A4%A7%E6%B0%94%E6%B1%A1%E6%9F%93%E9%98%B2%E6%B2%BB%E6%9D%A1%E4%BE%8B.