McKinney, Daene C.; Cai, Ximing; Rosegrant, Mark; Ringler, Claudia; Scott, Christopher(System-Wide Initiative on Water Management (SWIM), International Water Management Institute, Colombo, Sri Lanka, 1999)
Jayatilaka, C. J.; Sakthivadivel, R.; Shinogi, Y.; Makin, Ian; Witharana, P.(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2001)