Nielsen, Melanie; Hoogvorst, Anneke; Konradsen, Flemming; Mudasser, Muhammad; Van Der Hoek, Wim(International Water Management Institute, Colombo, Sri Lanka, 2001)
Klinkenberg, Eveline; Van Der Hoek, Wim; Amerasinghe, Felix P.; Jayasinghe, Gayathri; Mutuwatte, Lal; Gunawardena, Dissanayake M.(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2003)
Amerasinghe, Felix P.; Konradsen, Flemming; Van Der Hoek, Wim; Amerasinghe, Priyanie H.; Gunawardena, J. P. W.; Fonseka, K. T.; Jayasinghe, Gayathri(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2001)