Study on the composition and antioxidant properties of extracts from Colobanthus quitensis plants originating from the regions of the South Shetland Islands, Danco Coast and Graham Coast - I. V. Laguta; O. N. Stavinskaya; P. O. Kuzema; V. M. Anishchenko; R. V. Ivannikov; O. O. Poronnik; I. Y. Parnikoza (Reports of the National Academy of Sciences of Ukraine, 2024)