1. Altinbalik T, Can Y (2011) An upper bound analysis and determination of the barreling profile in upsetting. Indian J Eng Mater Sci 18(6):416–424
2. Avitzur B (1968) Metal forming processes and analysis, Chap 7. McGRAW-HILL Company Book, New Delhi
3. DEFORM-2D V9.0. Scientific Forming Technologies Corporation (SFTC)
4. Drucker DC (1954) Coulomb friction, plasticity and limit loads. J Appl Mech 21:71–74
5. Ebrahimi R, Najafizadeh A (2004) A new method for evaluation of friction in bulk metal forming. J Mater Process Technol 152(2):136–143. doi: 10.1016/j.jmatprotec.2004.03.029