1. The area of contact between sliding and between moving surfaces;Bowden,1939
2. P. Coulomb and J. Friedel, On the formation of cavities along dislocations,in Dislocations and Mechanical Properties of Crystals, J. Wiley and Sons Inc., New York, pp. 555–570.
3. The Theory of Rate Processes;Glasstone,1941
4. Proc. Conf. Lubrication and Wear;Freitag,1958