Lee, Y.R., et al. “Optimized Extraction of Two Organic Acids from Herba Artemisiae Scopariae With Reversed-Phase High Performance Liquid Chromatography Separation”. Asian Journal of Chemistry, vol. 24, no. 10, May 2012, pp. 4415-7, https://asianpubs.org/index.php/ajchem/article/view/9665.