KROL’, T. A.; ZINNATSHINA, L. V.; GATIATULINA, E. R.; RADIMICH, A. I.; SAYBEL, O. L.; BALEEV, D. N.; OSSIPOV, V. I. COMPOSITION AND CONTENT OF PHENOLIC COMPOUNDS IN DIFFERENT FRACTIONS OF EXTRACT FROM PLANTS OF ARNICA FOLIOSA NUTT. chemistry of plant raw material, n. 4, p. 139-147, 21 Dec. 2020.