GOTTVALD, Jakub. The calculation and measurement of the natural frequencies of the bucket wheel excavator schrs 1320/4X30. Transport, [S. l.], v. 25, n. 3, p. 269–277, 2010. DOI: 10.3846/transport.2010.33. Disponível em: https://journals.vilniustech.lt/index.php/Transport/article/view/5796. Acesso em: 16 may. 2025.