Unruh, Jon D.(CGIAR Systemwide Program on Property Rights and Collective Action (CAPRi), International Food Policy Research Institute (IFPRI). Washington, DC, 2001)
Quisumbing, Agnes R.; Otsuka, Keijiro(CGIAR System-Wide Program on Property Rights and Collective Action, International Food Policy Research Institute (IFPRI), Washington, DC, 2001)
Amman, Hans M.; Duraiappah, Anantha Kumar(International Institute for Environment and Development, London, and Institute for Environmental Studies, Amsterdam, 2001)