Chang Li, Ji, Gan Peng Li, Jian Hong Yang, Yun Dai, Yuan Xing Duan, and Jian Sheng Zhang. 2012. “A New Alkaloids from Corydalis Impatiens”. Asian Journal of Chemistry 24 (6):2815-16. https://asianpubs.org/index.php/ajchem/article/view/9234.