Smoilovska, H. P., O. O. Maliuhina, O. K. Yerenko, and T. V. Khortetska. “Spectrophotometric Study of Tannins in the Herb Achillea Millefolium L”. Current Issues in Pharmacy and Medicine: Science and Practice, vol. 16, no. 2, July 2023, pp. 130-4, doi:10.14739/2409-2932.2023.2.281344.