Jones, William R.; Poslowski, Agnieszka K.; Shogrin, Bradley A.; Herrera-Fierro, Pilar; Jansen, Mark J. (1999). "Evaluation of Several Space Lubricants Using a Vacuum Four-Ball Tribometer". Tribology Transactions. 42 (2): 317–323. doi:10.1080/10402009908982223. hdl:2060/19990013975. S2CID137361318.
Wei, D.P.; Spikes, H.A.; Korcek, S. (1999). "The Lubricity of Gasoline". Tribology Transactions. 42 (4): 813–823. doi:10.1080/10402009908982288.
Höglund, Erik (March 1989). "The Relationship Between Lubricant Shear Strength and Chemical Composition of the Base Oil". Wear. 130: 213–224. doi:10.1016/0043-1648(89)90234-2.
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Jones, William R.; Poslowski, Agnieszka K.; Shogrin, Bradley A.; Herrera-Fierro, Pilar; Jansen, Mark J. (1999). "Evaluation of Several Space Lubricants Using a Vacuum Four-Ball Tribometer". Tribology Transactions. 42 (2): 317–323. doi:10.1080/10402009908982223. hdl:2060/19990013975. S2CID137361318.
Jones, William R.; Poslowski, Agnieszka K.; Shogrin, Bradley A.; Herrera-Fierro, Pilar; Jansen, Mark J. (1999). "Evaluation of Several Space Lubricants Using a Vacuum Four-Ball Tribometer". Tribology Transactions. 42 (2): 317–323. doi:10.1080/10402009908982223. hdl:2060/19990013975. S2CID137361318.