Pumps as Turbines: A User's Guide
Arthur Williams has worked with the Intermediate Technology Development Group on micro-hydro since 1987. He completed a Ph.D. at Nottingham Trent University on the use of pumps as turbines and continues to work there as a Senior Research Fellow. He has his own engineering consultancy, Hydro-Active Engineering, and has worked in Nepal, Pakistan, Sri Lanka and Guyana.