1. “A Mew Approach to Plasticity and its Application to Two Dimensional Indenters”;Shaw;Trans. ASHE, J1. of Eng. for Industry,1970
2. “An Experimental Investigation of the Yielding of Strio between Smooth Dies”;Watts;Proc. (B) Instn. Mech. Engrs. (U.K.),1952
3. Williamson J.B.P. “Topography of Solid Surfaces,” Interdisciplinary Approach to Friction and Wear. Ed. by P. M. Ku, NASA SP 181 pp. 85-142 (1968).
4. “Real Area of Contact between a Rough Tool and a Smooth Workpiece at High Normal Pressures”;Bay;Int. Jl. of WEAR,1976
5. “The Mechanics of the Coining Process”;Bocharov;Trans. ASME, Jl. of Eng. for Industry,1952