Trojnacki, A. and Życzkowski, M. (1981) “Effect of Plastic Crushing of the Car Body on Optimization of Rheological Properties of Safety Belts”, Engineering Transactions, 29(1), pp. 115–130. Available at: http://et.ippt.gov.pl/index.php/et/article/view/1995 (Accessed: 17 January 2026).