Shen N, Cui Y, Xu W, Zhao X, Yang L.  2017.  Impact of phosphorus and potassium fertilizers on growth and anthraquinone content in Rheum tanguticum Maxim. ex Balf. INDCRO Industrial Crops & Products. 107:312-319.

Sun J, Li F, Xu W, Zhou G, You J, Chen G.  2009.  LC-ESI-MS Determination of 20 Free Amino Acids in Tibetan Medicine Gentiana dahurica with Pre-Column Fluorescence Derivatization. Chromatographia. 70(11-12):11-12.

Sun J, Chen G, Zhao X, Xu W, Zhou G, Han Y, You J.  2007.  Determination of 30 Free Fatty Acids in Two Famous Tibetan Medicines by HPLC with Fluorescence Detection and Mass Spectrometric Identification. Chroma Chromatographia : An International Journal for Rapid Communication in Chromatography, Electrophoresis and Associated Techniques. 65(7-8):469-476.