Marinković, T., and V. Marinković. “Analysis of the Deformation State of the Hollow Al-Profiles Extrusion Process by the Microstructural Method Application”. Advanced Technologies and Materials, vol. 25, no. 1-2, Dec. 2000, pp. 9-18, https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2000.26.1.2.