1. B.J. Fitch and S. Jaggernauth, Moisture, the Second Most Destructive Lubricant Contaminant, and Its Effects on Bearing Life, P/PM Technol., 1994, 5, p 50–53
2. M. Day and C. Bauer, Water Contamination in Hydraulic and Lube Systems, Pract. Oil Anal., 2007, 9, p 2007
3. R.M. Gresham, When Oil and Water Do Mix, Tribol. Lubr. Technol., 2008, 64(3), p 22
4. D. Troyer, The Visual Crackle-A New Twist to an Old Technique, Pract. Oil Anal. Mag., 1998, 10, p 14–17
5. W.M. Needelman, M.A. Barris, and G.L. Lavallee, Contamination Control for Wind Turbine Gearboxes, Power Eng. (Barrington, Illinois), 2009, 113(11), p 112–120