E. D. Fideršek, “Comparison of the Extraction Methods for Iron Content Assay in St. John’s Wort”, Glas. hem. tehnol. Bosne Herceg., no. 5 Special Issue, p. 24, Jun. 2024, Accessed: Oct. 05, 2026. Available: https://www.glashem.pmf.unsa.ba/index.php/bctbh/article/view/513