Tereffe, G. . “Total Thrust on Earth-Retaining Structures Due to Surcharges”. Zede: Journal of Ethiopian Engineers and Architects የኢትዮጵያ መሐንዲሶችና አርክቴክቶች መጽሔት, vol. 16, Jan. 2023, pp. 3-25, https://ejol.aau.edu.et/index.php/ZEDE/article/view/6458.