Biru Worku , G. ., and A. . Belay Kebede. “Modeling and Simulation of Traction of Power Supply System Case Study: Modjo-Hawassa Railway Line in Ethiopia”. Zede Journal of Ethiopian Engineers and Architects, vol. 36, Feb. 2023, pp. 54-66, http://ejol.aau.edu.et/index.php/ZEDE/article/view/6513.