Published Economic Evaluation of Small Capacity Sewage Processing Units by Gratziou M.K., Tsalkatidou M., Kotsovinos N.E. paper_9_GRATZIOU_387.pdf
Published Determination of beryllium in various types of natural waters by electrothermal atomic absorption spectrometry by Hagarová I., Macháčková, Žemberyová L., Návojová V. 40-47_814_Hagarova_14-1.pdf