Chemical Composition and Content of Polysaccharides from the Yellow Iris (Iris pseudacorus L.) Rhizomes, EA, Tikhomirova, AA Sorokina, VN Bubenchikova, EN Kostikova, VYu Zhilkina, and VV Bessonov , Pharmacognosy Journal, August 2020, Volume 12, Issue 5, p.1012-1018, (2020)