Hussain, Intizar; Raschid-Sally, Liqa; Hanjra, Munir A.; Marikar, Fuard; Van Der Hoek, Wim(International Water Management Institute, Colombo, Sri Lanka, 2002)
Arthington, A. H.; Baran, E.; Brown, Cate; Dugan, P.; Halls, A. S.; King, J. M.; Minte-Vera, C. V.; Tharme, Rebecca; Welcomme, R. L.(International Water Management Institute, Colombo, Sri Lanka, 2007)