ŚLODERBACH, Zdzisław. Analysis of the Nonstability States During Bending Processes of Metallic Tubes at Bending Machines Part I. Derivation of the basic expressions and relationships; Part II. Examples of calculations and analysis of some unstability states. Engineering Transactions, [S. l.], v. 64, n. 3, p. 311–350, 2016. DOI: 10.24423/engtrans.374.2016. Disponível em: https://et3.ippt.pan.pl/index.php/et/article/view/374. Acesso em: 11 jun. 2025.