7.
Jansen M J, Jones Jr W R, Pepper S V, Wheeler D R, Schroeer A, Fluehmann F, Shogrin B A. The effect of TiC coated balls and stress on the lubricant lifetime of a synthetic hydrocarbon (Pennzane 2001A) using a vacuum spiral orbit tribometer. In Proceeding International Tribology Conference, Nagasaki, Japan; October 2000.