Caloska, J., and J. Lazarev. “Velocity Profiles at the Outlet of the Different Designed Dies for Aluminium Extrusion”. Advanced Technologies and Materials, vol. 28, no. 1-2, Dec. 2003, pp. 73-82, https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2003.28.1-2.8.