You J, Wu H, Li G, Xia L, Zhao M, Lu S, Kong W.  2016.  Ultrasound-assisted dispersive liquid-liquid microextraction method combined with HPLC-fluorescence detection for the determination of glycyrrhetinic acid in liquorice and liquorice-derived food products. J IRAN CHEM SOC Journal of the Iranian Chemical Society. 13(2):359-367.

Li G, Lu S, Wu H, Chen G, Liu S, Kong X, Kong W, You J.  2015.  Determination of multiple phytohormones in fruits by high-performance liquid chromatography with fluorescence detection using dispersive liquid-liquid microextraction followed by precolumn fluorescent labeling Liquid Chromatography. J. Sep. Science Journal of Separation Science. 38(2):187-196.

Li G, Lu S, Wu H, Chen G, Liu S, Kong X, Kong W, You J.  2015.  Determination of multiple phytohormones in fruits by high-performance liquid chromatography with fluorescence detection using dispersive liquid-liquid microextraction followed by precolumn fluorescent labeling. JSSC Journal of Separation Science. 38(2):187-196.