3J. Beike,B. Karger,T. Meiners,B. Brinkmann,H. K?hler.LC-MS determination of Taxus alkaloids in biological specimens[J].International Journal of Legal Medicine.2003(6)
4Sandra Zaugg,Wolfgang Thormann.Capillary electrophoretic separation, immunochemical recognition and analysis of the diastereomers quinine and quinidine and two quinidine metabolites in body fluids[J].Journal of Pharmaceutical and Biomedical Analysis.2001(5)