| March, 2000 | Robert Repetto and Duncan Austin |
| October, 2000 | Robert Repetto and Duncan Austin |
| July, 2002 | Duncan Austin and Amanda Sauer |
| October, 2003 | Duncan Austin, Niki Rosinski, Amanda Sauer, Colin Le Duc. Published by World Resources Institute and WRI and ... |
| November, 2004 | Fred Wellington, Amanda Sauer |
| December, 2004 | Fred Wellington, Chris Fox (Ceres) |
| March, 2005 | Fred Wellington, Amanda Sauer, Philipp Mettler, Gabriela Grab Hartmann |
| May, 2005 | Fred Wellington, Amanda Sauer |
| June, 2005 | Merrill Lynch and WRI’s Capital Markets Research Team |
| November, 2006 | Merrill Lynch and WRI’s Capital Markets Research Team |