1. Boundary Layer Lubrication: Monolayer or Multilayer;Allen;Wear,1969
2. The Properties of Solutions of Organic Acids in Liquid Hydrocarbons at Solid Surfaces;Fuks,1962
3. Lord Rayleigh (J.W. Strutt), On the Lubricating and Other Properties of Thin Oily Films, Phil. Mag. J. Science, 6th Series, Vol. 35, 1918, pp. 157–163.
4. Boundary Lubrication - The Paraffin Series;Hardy;Proc. Roy. Soc, London, Series A,1921
5. Boundary Lubrication - The Temperature Coefficient;Hardy;Proc. Roy. Soc., London, Series A,1922