1. Wear studies through particle size distribution, I, Application of the Weibull distribution function to ferrography;Roylance,1983
2. Image analysis and other metallographic techniques as an aid to machinery health monitoring;Price;Microstruct. Sci.,1981
3. Monitoring wear and lubrication conditions in gear systems using ferrography;Pocock,1978
4. Non-parametric Statistics;Siegel,1956