Woldeyes, Belay. 2023. “Reduction of Sulphate Content from Coated Alumina SO2+4Al2O3 /AL (oxide Layer) by the Hydrogen Spillover”. Zede: Journal of Ethiopian Engineers and Architects የኢትዮጵያ መሐንዲሶችና አርክቴክቶች መጽሔት 14 (January):1-7. https://ejol.aau.edu.et/index.php/ZEDE/article/view/6382.