“THE ESTIMATION OF UNCERTAINTY FOR X-RAY FLUORESCENCE ANALYSIS OF COMPOUNDS: UDC 543.426”. Bulletin of Taras Shevchenko National University of Kyiv. Chemistry 45, no. 2 (April 17, 2008): 48–50. Accessed October 6, 2026. https://chemistry.bulletin.knu.ua/en/article/view/8355.