WŁODARCZYK, E. Normal Penetration of the Rigid Penetrator Into Elastic-Plastic Half-Space With Viscosity. Engineering Transactions, [S. l.], v. 55, n. 4, p. 335–344, 2014. DOI: 10.24423/engtrans.215.2007. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/215. Acesso em: 23 sep. 2025.