Fentahun Kassa, Yenealem. “Determinants of Infrastructure Project Delays and Cost Escalations: The Cases of Federal Road and Railway Construction Projects in Ethiopia”. American Scientific Research Journal for Engineering, Technology, and Sciences 63, no. 1 (January 22, 2020): 102–136. Accessed July 3, 2024. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/5448.