List of Articles Hossein Mahdavi Article 1 - Comparison of Two Spectrophotometric Methods for Quantifying Total Hydroxycinnamic Acids in Coneflower (Echinacea purpurea) Preparations 10.14196/JHD. 2018. 235 حسین مهدوی محمد رضا نادری محمدحسین اسماعیلی Journal of Medicinal Herbs, "J. Med Herb"(Formerly known as Journal of Herbal Drugs or J. Herb Drug) , Issue 1 , Year , Autumn 2018