SIAHAAN, H. C.; WIGUNA, I. P. A. Analysis of Factors Causing Variation Orders and their Impact on Construction Contract Value of Main Dam Projects. ASTONJADRO, [S. l.], v. 13, n. 3, p. 903–915, 2024. DOI: 10.32832/astonjadro.v13i3.15981. Disponível em: http://360665.5mvk4.group/index.php/ASTONJADRO/article/view/15981. Acesso em: 26 feb. 2025.