HAGHIGHAT, Heshmatollah; ASGARI, Gholam Reza. AN UPPER BOUND SOLUTION OF BACKWARD TUBE EXTRUSION PROCESS THROUGH CURVED PUNCHES. Acta Metallurgica Slovaca, [S. l.], v. 20, n. 1, p. 35–49, 2014. DOI: 10.12776/ams.v20i1.214. Disponível em: https://office.journal-ams.org/index.php/AMS/article/view/71. Acesso em: 21 sep. 2026.