Shiferaw, Bekele; Kebede, Tewodros; Reddy, V. Ratna(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2008)
Knox, Anna; Swallow, Brent M.; Johnson, Nancy(CGIAR System-Wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2001)