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Gamachu Fikadu Abdi, and Kibur Hunie Tesfa. “Recent Advances in Synthesis of Coumarins: Coumarin Derivatives and Their Biological Application”. Ethiopian Journal of Natural and Computational Sciences, vol. 2, no. 2, Aug. 2022, pp. 361-74, doi:10.20372/ejncs.v2i2.777.