KRYSTOSIK, Przemysław. On the columns buckling length of unbraced steel frames with semi-rigid joints. Archives of Civil Engineering, [S. l.], v. 67, n. 1, p. 539–556, 2021. DOI: 10.24425/ace.2021.136488. Disponível em: https://wydawnictwo.pan.pl/index.php/ace/article/view/3747. Acesso em: 20 oct. 2026.