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2. Degarmo, E. P., J. T. Black,. and R. A. Kohser, Materials and Processes in Manufacturing, MacMillan, New York, pp. 573–576.
3. Applied Regression Analysis;Draper,1967
4. Process Engineering for Manufacturing;Earry,1962
5. Tool Wear, Tool Life Distribution, and Consequences;Ramalingam,1982