Weingart, Anne; Kirk, Michael(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2008)
Awulachew, Seleshi Bekele; Merrey, Douglas J.; Kamara, Abdul; Van Koppen, Barbara; Penning de Vries, F.W.T.; Boelee, Eline(International Water Management Institute, Colombo, Sri Lanka, 2005)
Jagger, Pamela(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, USA, 2008)