DOE, “American Clean Energy and Security act (ACES),”[EB-OL][2009-06], Available at:http://www.opengress.org/bill/111-h2454/show.
 FERC, “The Technical Conference of Integrating Renewable Resources into the Wholesale Electric Grid,” [EB-OL][2009-04]，Available at : http://www.ferc.gov.
 K. F. Zhou, D. X. Qin, S. M. Jiang. W. Wu and X. K. Yang, “Evaluation of the Mining Investment Environment about Four Neighboring Countries by Using Extension Method,” China Mining Magazine, 2010. 9.
 G. N. Liu, X. Q. Chen, G. Y. He and S. X. Zhou. “The Principle of the Evaluation Index System of Electricity Market and Build,” Automation of Electric Power Systems Press, Vol. 29, No. 23, 2005, pp. 2-9.
 G. N. Liu, R. Q. Li, X. Q. Chen, G. Y. He and S. X. Zhou, “Electricity Market Regulatory Indicators and Market Rating System,” Automation of Electric Power Systems Press, Vol. 28, No. 9, 2004, pp. 16-22.