P., Pudjisuryadi,; ., Tavio. Compressive Strength Prediction of Square Concrete Columns Retrofitted with External Steel Collars. Civil Engineering Dimension, [S. l.], v. 15, n. 1, p. 18–24, 2013. DOI: 10.9744/ced.15.1.18-24. Disponível em: https://ced.petra.ac.id/index.php/civ/article/view/18677. Acesso em: 4 oct. 2025.