OSIPIUK, W., and K. ŁUKASZEWICZ. “Strain Hardening under Non-Proportional Loading in Polycrystalline Aluminum Alloys”. Engineering Transactions 56, no. 4 (December 31, 2008): 311–324. Accessed March 19, 2026. https://et.ippt.gov.pl/index.php/et/article/view/187.