Ziegler SJ (1986). "Fast and Selective Assay of l-Ascorbic Acid in Rose Hips by RP-HPLC Coupled with Electrochemical and/or Spectrophotometric Detection". Planta Medica. 52 (5): 383–7. doi:10.1055/s-2007-969192. PMID17345347.
Ziegler SJ (1986). "Fast and Selective Assay of l-Ascorbic Acid in Rose Hips by RP-HPLC Coupled with Electrochemical and/or Spectrophotometric Detection". Planta Medica. 52 (5): 383–7. doi:10.1055/s-2007-969192. PMID17345347.