Szakova, J., & Mader, P. (2004). Basic Decomposition Techniques of Aboveground Parts of Higher Plants for Determination of Some Essential Elements (Ca, K, Mg, P, B, Co, Cu, Fe, Mn, Mo and Zn). Chemické Listy, 98(7). Získáno z http://www-.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2122