By Guy Pethybridge and Nigel New. Published in World Pumps, June 2002.
By Dr. Guy Pethybridge. Published in International Oil & Gas Engineer, 2006.
By Jeff Anderson, Waukesha Bearings Corporation, and Kevin Terrasi, Pump Engineering, Inc. Published in Pumps & Systems, May 2010.
by Barry Blair. Published in Modern Pumping Today, February 2015.
by Sriram Venkatesan. Published in International Oil & Gas Engineer, Feb 2017.