1. [1] Dowson, D., History of Tribology, 2nd ed., PEP, London, 1998, 32-57.
2. [2] Parish, W. F., “Three Thousand Years of Progress in Developing Machinery and Lubricants for the Hand Crafts,” Mill and Factory, 16, 1935, 27-30, 86-87.
3. [3] Kragelskii, I. V. and Shchedrov, V. S., Razvitie Nauki o Trenii (Development of the Science of Friction), Academy of Science, Moscow, 1956.
4. [4] Davison, C., “Wear Prevention in Early History,” Wear, 1, 1957, 155-159; “Wear Prevention between 25 BC and 1700 AD,” Wear, 2, 1958, 59-63.
5. [5] Bartz, W. J., Zur Geschichte der Tribologie, Expert, Ehningen, 1988.