“STUDY OF ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF SAXICOLOUS LICHEN $ \textit{XANTHOPARMELIA STENOPHYLLA} $”, Proc. YSU B: Chem. Biol. Sci., vol. 54, no. 2 (252), pp. 132–137, Aug. 2020, doi: 10.46991/PYSU:B/2020.54.2.132.