Himmer, T., A. Techel, S. Nowotny, and E. Beyer. “New Developments in Metal Laminated Tooing”. Advanced Technologies and Materials, vol. 28, no. 1-2, Dec. 2003, pp. 13-20, https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2003.28.1-2.2.