Behrman, Julia; Billings, Lucy; Peterman, Amber(CGIAR Systemwide Program on Collective Action and Property Rights (CAPRi), International Food Policy Research Institute, Washington, DC, 2013)
Walmsley, Danny; Havenga, Tommie; Braune, Eberhard; Schmidt, Chris; Prasad, Krishna; Van Koppen, Barbara(International Water Management Institute, Colombo, Sri Lanka, 2004)