Mestek, O., Hruby, V. a Suchanek, M. (2000) „Preparation and Testing of Standard Solutions of Nickel, Selenium, Thallium, and Zinc", Chemické listy, 94(2). Dostupné z: http://ww-w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2541 (Viděno: 25 listopad 2024).