KOPÁČKOVÁ, M. Critical Length of a Column in View of Bifurcation Theory. Acta Polytechnica, [S. l.], v. 41, n. 1, 2001. DOI: 10.14311/180. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/180.. Acesso em: 24 may. 2025.