Hadgu, T., and M. Amare. “Assessment of the Level of Chromium Species in the Discharged Effluents of Haik and Debre Berhan Tanneries in the Amhara Region Using ICP-OES and UV-VIS Spectrometry”. Ethiopian Journal of Science and Technology, Vol. 9, no. 2, Jan. 2025, pp. 123-38, http://journals.bdu.edu.et/index.php/EJST/article/view/2041.