FISSEHA, D. .; MULUGETA, M.; GEBREYOUHANNES, E. . OPTIMAL DESIGN AND ANALYSIS OF PRE-STRESSED CONCRETE SLEEPERS. Zede: Journal of Ethiopian Engineers and Architects የኢትዮጵያ መሐንዲሶችና አርክቴክቶች መጽሔት, [S. l.], v. 34, p. 1–9, 2023. Disponível em: https://ejol.aau.edu.et/index.php/ZEDE/article/view/6494. Acesso em: 10 apr. 2026.