Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. EPI 2012: Summary for Policymakers(PDF). EPI Yales. [2012-01-27]. (原始内容(PDF)存档于2016-12-30).
archive.today
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2010 EPI Rankings. [2012-01-25]. (原始内容存档于2012-05-05).
Yale Center for Environmental Law & Policy, and Center for International Earth Science Information Network at Columbia University. Environmental Performance Index. [2008-03-16]. (原始内容存档于2022-11-01).
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2008 Environmental Performance Index Report(PDF). [2008-03-18]. (原始内容(PDF)存档于2008-04-09). See Executive Summary, pp. 32-35 for a detailed comparison between the ESI 2005, the EPI 2006 and the EPI 2008.
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. Pilot 2006 Environmental Performance Index Main Report(PDF): 33. [2007-06-17]. (原始内容(PDF)存档于2007-01-05).
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2012 Environmental Performance Index. [2010-01-27]. (原始内容存档于2010-02-04).See also official Press release
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. EPI 2012: Summary for Policymakers(PDF). EPI Yales. [2012-01-27]. (原始内容(PDF)存档于2016-12-30).
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2012 Environmental Performance Index. [2010-01-27]. (原始内容存档于2010-02-04).See also official Press release
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2010 EPI Rankings. [2012-01-25]. (原始内容存档于2012-05-05).
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. EPI 2014: Summary for Policymakers(PDF). EPI Yales. [2014-12-02].[永久失效連結]
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. 2008 Environmental Performance Index Report(PDF). [2008-03-18]. (原始内容(PDF)存档于2008-04-09). See Executive Summary, pp. 32-35 for a detailed comparison between the ESI 2005, the EPI 2006 and the EPI 2008.
Yale Center for Environmental Law & Policy / Center for International Earth Science Information Network at Columbia University. Pilot 2006 Environmental Performance Index Main Report(PDF): 33. [2007-06-17]. (原始内容(PDF)存档于2007-01-05).
research.yale.edu
Yale Center for Environmental Law & Policy, and Center for International Earth Science Information Network at Columbia University. Environmental Performance Index. [2008-03-16]. (原始内容存档于2022-11-01).