Gatitu, J. N., Kabubo, C. K. and Ajwang, P. (2020) “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, 10(5), pp. 6195–6199. doi: 10.48084/etasr.3737.