References

1. A. T. Male and M. G. Cockcroft,
   “A method for the determination of the coefficient of friction of metals under conditions of bulk plastic deformation,”
   Journal of the Institute of Metals, vol. 93, pp. 38–46, 1965.

2. B. Avitzur,
   Metal Forming: Processes and Analysis.
   New York, NY, USA: McGraw-Hill, 1968.

3. G. E. Dieter,
   Mechanical Metallurgy, 3rd ed.
   New York, NY, USA: McGraw-Hill, 1986.