Boyko E. V., and Novozhilova E. V. “Сrystals in the Tissues of Cypsela of Species Heliantheae s.L. (Asteraceae)”. Проблемы ботаники Южной Сибири и Монголии, Vol. 24, no. 1, Oct. 2025, pp. 17-19, doi:10.14258/pbssm.2025004.