Interaction Diagrams for Reinforced Concrete Hollow Circular Cross-section. Proceedings of Faculty of Civil Engineering, [S. l.], v. 20, n. 1, p. 111–126, 2019. DOI: 10.32762/zr.20.1.7. Disponível em: https://zr.gradri.uniri.hr/zr/article/view/36. Acesso em: 9 jan. 2026.