1) G.W.Stachowiak & A.W.Batchelor, Engineering Tribology, 2nd Ed, Butterworth Heinemann.
2) Handbook of Lubrication & Tribology, Vol I, Ed.: G.E.Totten, CRC & STLE.
3) Basic Handbook of Lubrication, 3rd Ed, Ed: E Zabawski & Others, STLE Alberta Section.
4) The Practical Handbook of Machinery Lubrication, 3rd Ed, L.Leugner, Noria Publishing.
5) Machinery Lubrication Magazine, Noria Publishing
6) Tribology & Lubrication Magazine, STLE Publication
7) Tribology Transactions, STLE Publication
8) Lube Oil Predictive Maintenance, Handling, and Quality Assurance Guideline, EPRI, Palo Alto, CA: 2002.
9) A Review of Grease Lubrication in Rolling Bearings; P.M.Lugt, SKF Eng & Research Centre; Tribology Transactions 52 ( 2009), STLE publication
10) AGMA 925-A03; Effect of lubrication on gear surface
11) Rolling Bearing Lubrication; FAG Publication WL 81 115/4 EA