Ivanišević, A., Vilotić, D., Plančak, M., Kačmarčik, I., Movrin, D., Milutinović, M., & Skakun, P. (2012). Contact stresses and forming load in upsetting of prismatic billets by V-shape dies. Advanced Technologies and Materials, 37(2), 133–141. Retrieved from https://atm-journal.uns.ac.rs/index.php/atm/article/view/JTP.2012.37.2.3