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Li, H.-X.; Din, M.-Y.; Yu, J.-Y., Separation and identification of the phthalic anhydride derivatives of liqusticum Chuanxiong hort by GC-MS, TLC, HPLC-DAD, and HPLC-MS, J. Chromatogr. Sci., 2002, 40, 3, 156-161, https://doi.org/10.1093/chromsci/40.3.156 . [all data]