Van Der Hoek, Wim; Sakthivadivel, R.; Renshaw, Melanie; Silver, John B.; Birley, Martin H.; Konradsen, Flemming(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2001)
Addison, Monica; Sarfo-Mensah, Paul; Edusah, S. E.(Bureau of Integrated Rural Development (BIRD), Kwame Nkrumah University of Science and Technology (KNUST), PMB UPO Kumasi Ghana, 2015)
Cai, Xueliang; Sharma, Bharat R.; Matin, Mir Abdul; Sharma, Devesh; Gunasinghe, Sarath(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2010)
Molle, François; Jayakody, Priyantha; Ariyaratne, B. Ranjith; Somatilake, H. S.(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2005)
Larson, Donald F.; Otsuka, Keijiro; Kajisa, Kei; Estudillo, Jonna; Diagne, Aliou(The World Bank, Agriculture and Rural Development Team, New York, 2010)