Liu JJ, Li SP, Wang YT (January 2006). ”Optimization for quantitative determination of four flavonoids in Epimedium by capillary zone electrophoresis coupled with diode array detection using central composite design”. J Chromatogr A 1103 (2): sid. 344–9. doi:10.1016/j.chroma.2005.11.036. PMID 16337210.
Liu JJ, Li SP, Wang YT (January 2006). ”Optimization for quantitative determination of four flavonoids in Epimedium by capillary zone electrophoresis coupled with diode array detection using central composite design”. J Chromatogr A 1103 (2): sid. 344–9. doi:10.1016/j.chroma.2005.11.036. PMID 16337210.