Walton, J.F., “Auxiliary Bearings in Support of Magnetic Bearings for Turbine Engines,” SAE Paper 1999-01-1392, Published in Proceedings of the 1999 SAE Aerospace Power Systems Conference, P-341, pp. 179-185, April 6-9, 1999, Mesa AZ Awarded 1999 SAE Charles M. Manly Memorial Medal.