Tesfahun Sisay, B. M. Mehari, and Dereje Yenealem. “Elemental and Polyphenol Contents of Green Coffee Beans from Central Gondar Zone, Ethiopia”. Ethiopian Journal of Natural and Computational Sciences, vol. 3, no. 2, May 2024, pp. 443-52, doi:10.20372/ejncs.v3i2.778.