Leng, Hongqiong, Guangyu Yang, Yongkuan Chen, Yadong Guo, and Zhangyu Chen. “Isolation and Biological Activities of Furanoflavones from the Roots of Codonopsis Cordifolioidea”. Asian Journal of Chemistry 25, no. 4 (November 1, 2012): 2024–2026. Accessed July 22, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_4_57.