Bayliak, Maria, et al. “The Content of Biologically Active Substances and Total Antioxidant Activity of Black Tea Drinks and Decoctions of Medicinal Plants Fermented With Kombucha”. Journal of Vasyl Stefanyk Precarpathian National University. Biology, vol. 10, Dec. 2023, pp. 20-33, doi:10.15330/jpnubio.10.20-33.