Prakash, Aseem(Department of Strategic Management and Public Policy, School of Business and Public Management, The George Washington University, Washington, DC, 1999)
Namara, Regassa E.; Awuni, Joseph A.; Barry, Boubacar; Giordano, Mark; Hope, Lesley; Owusu, Eric S.; Forjuor, Gerald(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2011)