Bernardo, Luis F. A., Jorge M. A. Andrade, and Luiz A. Pereira-De-Oliveira. “Reinforced and Prestressed Concrete Hollow Beams under Torsion”. Journal of Civil Engineering and Management 19, no. 1 (January 9, 2014): S141-S152. Accessed January 10, 2025. https://mla.vilniustech.lt/index.php/JCEM/article/view/3967.