ELSHAIKH, E.; MAHMOUD, S. Variation Orders in Building Projects in Khartoum State-Sudan: The Causes and the Impact on Projects Performance. Proceedings of the International Conference on Civil Infrastructure and Construction (CIC) , [S. l.], v. 2020, n. 1, p. 191–198, 2020. DOI: 10.29117/cic.2020.0026. Disponível em: https://journals.qu.edu.qa/index.php/CIC/article/view/3911. Acesso em: 18 oct. 2024.