1. Oxford, C. J., Jr. “On the drilling of metals: 1 Basic mechanics of the process,” Trans ASME, 1955, 77, February, 103–114
2. Shaw, M. C. and Oxford, C. J., Jr. “On the drilling of metals: 2 Torque and thrust in drilling,” Trans ASME, 1957, 79, January, 139–148
3. Galloway, D. F. “Some experiments on the influence of various factors on drill performance,” Trans ASME, 1957, 79, February, 191–231
4. Merchant, M. E. “Basic mechanics of the metal-cutting process,” J Appl Mech, 1944, 66, Sept., A168–A175
5. Torque and thrust force in twist drilling. I. Theory;Rubenstein;Int J Machine Tools Manufact,1991