1. Introduction to Crystal Analysis;Bragg,1928
2. Friction and Lubrication of Solids, Part 1;Bowden,1954
3. Real Contact and Shear Strength of Monomolecular Layers;Bailey;Proc. Roy. Soc., London, Series A,1955
4. Friction and Lubrication of Solids, Part 2;Bowden,1964
5. Lubrication by Lamellar Solids;Deacon;Proc. Roy. Soc., London, Series A,1958