Mandić V, Živković M, Vulović S, Marinković T. FEM analysis for the extrusion process of tubes using porthole dies. Adv Techn Mat [Internet]. 2004 Dec. 20 [cited 2024 Oct. 31];29(1-2):35-43. Available from: https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2004.29.1-2.4