Mukherjee, S., H. A. Koyi, C. J. Talbot, and A. Jain. “How Significant Is Erosion in Extrusion- Insights from Analogue and Analytical Models”. Himalayan Journal of Sciences, vol. 5, no. 7, Sept. 2008, p. 92, doi:10.3126/hjs.v5i7.1286.