Li, Fei, Wei-Ming Cheng, Xin Di, and Chun-Jie Zhao. 2011. “Screening and Identification of Multi Compounds in Yitongshu Injection Using Combination of Liquid Chromatography Time-of-Flight Tandem Mass Spectrometry”. Asian Journal of Chemistry 23 (11):4799-4804. https://asianpubs.org/index.php/ajchem/article/view/10986.