1. Chemistry and Technology of Lubricants;Mortier,2010
2. ASTM Vol. D664-11a, ASTM International, West Conshohocken, PA. (2011).
3. Machinery Oil Analysis: Methods, Automation & Benefits;Toms,2008
4. ASTM, Vol. E2412-04, ASTM International, West Conshohocken (2004).
5. ASTM, Vol. D4636-09, ASTM International, West Conshohocken (2009).