SZCZEŚNIAK, Z. Discrete Model of Wave Propagation in a Nonprismatic Bar with Rigid Unloading Characteristics. Engineering Transactions, [S. l.], v. 41, n. 1, p. 77–96, 1993. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/1556. Acesso em: 5 dec. 2025.