1. Measurement of the oil film thickness between the piston rings and liner of a small diesel engine;Hamilton,1974
2. Comparison between measured and calculated thickness of the oil films lubricating piston rings;Hamilton,1974
3. Piston-ring lubrication in a two-stroke diesel engine;Moore;Wear,1981
4. Automobile engine lubrication;Schilling,1972
5. Improved fuel economy via engine oils;Waddey;SAE paper 780599,1978