By Guy Pethybridge and Nigel New. Published in World Pumps, June 2002.
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 S.J. Gray, R.A.C. Jayawant and A.J. Leopard. Presented at the 11th International Pump Technical Conference, Cambridge, 18-20 April 1989.
by Michael K. Swann, Jonathan Watkins and Kevin Bornstein. Published in the Proceedings of the 14th International Pump Users Symposium, 1996.