O. S. Brovko, A. A. Sloboda, D. V. Zhil’tsov, T. A. Boytsova, M. A. Pustynnaya, and A. D. Ivakhnov, “ISOLATION OF BIOLOGICALLY ACTIVE SUBSTANCES OF PHENOLIC NATURE FROM THE LICHEN HYPOGYMNIA PHYSODES”, JCPRM, no. 4, pp. 155-164, Dec. 2023.