GATITU, J. N.; KABUBO, C. K.; AJWANG, P. Approaches on Mitigating Variation Orders in Road Construction Industry in Kenya: The Case of Kenya National Highways Authority (KeNHA). Engineering, Technology & Applied Science Research, Greece, v. 10, n. 5, p. 6195–6199, 2020. DOI: 10.48084/etasr.3737. Disponível em: https://etasr.com/index.php/ETASR/article/view/3737. Acesso em: 29 jan. 2022.