1. “Elasto-hydrodynamic lubrication';Dowson,1966
2. 'Contribution à l'étude du pitting';Lagarde;Ingénleurs de l'Automobile,1965
3. 'The effect of lubrication on cam and tappet performance';Muller;MTZ.,1966
4. DYSON, A. 'Elastohydrodynamic lubrication and wear of cams bearing against cylindrical tappets', SAE paper 770018.
5. 'Kinematics and wear patterns of a cam and finger follower automotive valve gear';Dyson;Trib. Intl.,1980