Heltai, György, Ilona Fekete, Gábor Halász, Katalin Kovács, Márk Horváth, Anita Takács, Norbert Boros, and Zoltán Győri. “Multi-Elemental Inductively Coupled Plasma-Optical Emission Spectroscopic Calibration Problems of the Sequential Extraction Procedure for the Fractionation of the Heavy Metal Content from Aquatic Sediments”. Hungarian Journal of Industry and Chemistry 43, no. 1 (June 1, 2015): 7–13. Accessed April 28, 2024. https://hjic.mk.uni-pannon.hu/index.php/hjic/article/view/hjic-2015-0002.