1. Fusaro, R. L., 1995, “Lubrication of Space Systems,”J. of the Society of Tribologists and Lubrication Engineers, Vol. 51, No. 3, pp. 182–194.
2. Kato, K., Furuyama, H. and Mizumoto, M., 1990, “The Fundamental Properties of Tribo-Coating Films in Ultra High Vacuum,”Proc. of Japan International Tribology Conference. Nagoya, pp. 261-266.
3. Miyoshi, K., 1999, “Considerations in Vacuum Tribology (Adhesion, Friction, Wear and Solid Lubrication in Vacuum),”Tribology International, Vol. 32, pp. 605–616.
4. Roberts, E. W., 1990, “Thin Solid Lubricant Films in Space,”Tribology International, Vol. 23, No. 2, pp. 95–104.
5. Roberts, E. W., 1989, “Ultra Low Friction Films of MoS2 for Space Applications,”Thin Solid Films, Vol. 181, pp. 461–473.