Assefa, T., and T. . Guracha. “Evaluation and Validation of the Causes for Cobblestone Road Failures in Hawassa City: Tigist Assefa¹*, Tigist Guracha, Erste Telila, and Temesgen Aynabeba”. Ethiopian Journal of Engineering and Technology, vol. 4, no. 1, Jan. 2025, pp. 15-25, https://journals.hu.edu.et/hu-journals/index.php/ejet/article/view/1088.