Nielsen, Melanie; Hoogvorst, Anneke; Konradsen, Flemming; Mudasser, Muhammad; Van Der Hoek, Wim(International Water Management Institute, Colombo, Sri Lanka, 2001)
Kruijssen, Froukje; Keizer, Menno; Giuliani, Alessandra(CGIAR Systemwide Program on Collective Action and Property Rights (CAPRi), Washington, DC, USA, 2007)