PIETRZAKOWSKI, M. Analiza Losowych Drgań Uproszczonego Modelu Ram Pojazdu. Engineering Transactions, [S. l.], v. 28, n. 3, p. 347–357, 1980. Disponível em: http://et.ippt.gov.pl/index.php/et/article/view/2162. Acesso em: 17 jan. 2026.