Mwangi, Esther; Markelova, Helen(CGIAR Systemwide Program on Collective Action and Property Rights (CAPRi), International Food Policy Research Institute, Washington, DC, 2008)
Meinzen-Dick, Ruth; Di Gregorio, Monica(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washingto , DC, USA, 2004)