By Bradberry, James, James Bradberry
By Claudia W. Sadoff, Dale Whittington, David Grey, World Bank
By P. P. Howell (Wolfson College, Cambridge), J. A. Allan (University of London)
By Michael H. Glantz
By J.V. Sutcliffe, Y.P. Parks
By Salman M. A. Salman, Kishor Uprety
By Brian Arnold
By G. Carleton Ray, Jerry McCormick-Ray (both at University of Virginia, USA)
By M.V.K. Sivakumar, J.S. Wallace, C. Renard, C. Giroux, International Association of Hydrological Sciences
By Michael J. Benton
By David G. Victor