M. Kozyra, K. Głowniak, and M. Boguszewska, “The analysis of flavonoids in the flowering herbs of Carduus acanthoides L”., Curr. Issues Pharm. Med. Sci., vol. 26, no. 1, pp. 10–15, Mar. 2013, doi: 10.12923/j.2084-980X/26.1/a.02.