| Working Paper: June, 2010 | Dana Krechowicz, Shally Venugopal |
| February, 2002 | World Resources Institute
|
| May, 2012 | By John Larsen, updated by Michael Obeiter
|
| Working Paper: December, 2009 | Xiaomei Tan (WRI) and Zhao Gang (CASTED)
|
| February, 2002 | Dan Tunstall, Norbert Henninger, Robin P. White
|
| April, 2002 | Susan Minnemeyer, With contributions from Tyson Walker, Jean-Gael Collomb, Linda Cotton, and Dirk Bryant
|
| April, 1998 | Marta Miranda with Alberto Blanco-Uribe Q., Lionel Hernández, José Ochoa G., and Edgard Yerena
|
| February, 2013 | Alex Perera, Samantha Putt del Pino, Barbara Oliveira
|
| May, 2003 | Crescencia Maurer with Suzanne Ehlers and Andrew Buchman
|
| January, 1990 | James J. MacKenzie and Mohamed T. El-Ashry
|