Citation: Tj. Schmidt et G. Willuhn, Sesquiterpene lactone and flavonoid variability of the Arnica angustifoliaaggregate (Asteraceae), BIOCH SYST, 28(2), 2000, pp. 133-142
Citation: Tj. Schmidt et al., On the stability of sesquiterpene lactones in the officinal arnica tincture of the German Pharmacopoeia, PLANTA MED, 66(7), 2000, pp. 678-681