| September, 1997 | Tamar Gunter
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| November, 1998 | Ben Sinnamon (World Wildlife Fund) and Sandy Buffett (World Resources Institute)
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| December, 1997 | Zou Ji, Renmin University, Beijing
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| February, 2011 | Shally Venugopal, Amanda Sauer and Kyle Loughlin (Standard & Poor’s)
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| May, 2006 | Samantha Putt del Pino, Ryan Levinson, John Larsen
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| October, 1996 | Robert Repetto, Dale Rothman, Paul Faeth, and Duncan Austin
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| September, 2004 | U.S. DOE, Energy Efficiency and Renewable Energy, Federal Energy Management Program; U.S. EPA Green Power ... |
| April, 2006 | Craig Hanson, David Sandalow (The Brookings Institution)
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| Working Paper: October, 2010 | Ma Jun (IPE), Ray Cheung (WRI), Wang Jingjing, (IPE) Ruan Qingyuan (IPE)
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| December, 2005 | Florence Daviet, Janet Ranganathan, World Business Council for Sustainable Development (WBCSD) |