Mati, Bancy M.; Muchiri, John M.; Njenga, Kennedy; Penning de Vries, F.W.T.; Merrey, Douglas J.(International Water Management Institute, Colombo, Sri Lanka, 2006)
Birner, Regina; Gunaweera, Hasantha(CGIAR System-Wide Program on Property Rights and Collective Action, International Food Policy Research Institute (IFPRI), Washington, DC, 2001)
Swallow, Kimberly A.(CGIAR Ssytemwide Program on Collective Action and Property Rights, International Food Policy Research Institute, Washington DC, 2000)
Swallow, Brent M.; Wangila, Justine; Mulatu, Woudyalew; Okello, Onyango; McCarthy, Nancy(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2000)
Hukkinen, Janne; Müller-Wille, Ludger; Heikkinen, Hannu(Department of Civil and Environmental Engineering, Laboratory of Environmental Protection Publication, Helsinki University of Technology, 2003)