Gebremedhin, Berhanu; Pender, John; Girmay, Tesfaye(Environment and Production Technology Division, International Food Policy Research Institute, 2000)
Meinzen-Dick, Ruth; Pandolfelli, Lauren; Dohrn, Stephan; Athens, Jessica(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, USA, 2006)
McCay, Bonnie J.; Jones, Barbara(Ecopolicy Center for Agricultural, Enviornmental and Resource Issues, New Jersey Experimental Station, New Brunswick, NJ, 1997)