Alexandrov, Sergei, Olga Chesnikova, and Alexander Pirumov. 2007. “An Approximate Solution for Axisymmetric Extrusion of Porous Material”. Advanced Technologies and Materials 32 (1-2):13-27. https://atm-journal.uns.ac.rs/index.php/atm/article/view/jtp.2007.32.1-2.2.