Liu, Yan, Huimin Bi, Fuying You, Junping Hu, Xingquan Chai, and Yi Du. 2012. “Determination of the Fingerprint Chromatogram of Sanhuang Tablet by HPLC”. Asian Journal of Chemistry 24 (10):4522-24. https://asianpubs.org/index.php/ajchem/article/view/9694.