Demelash Erku, Mekurialem, Jabasingh S. Anuradha, and Abubeker Yimam. “Silver Recovery from Waste X-Ray Photographic Films Collected from Hospitals in Addis Ababa”. Zede Journal of Ethiopian Engineers and Architects 35 (February 8, 2023): 1–7. Accessed November 25, 2024. http://ejol.aau.edu.et/index.php/ZEDE/article/view/6478.