“COLORIMETRIC DETERMINATION OF PD(II), RH(III), RU(IV) ON THE SURFACE OF SILICA GEL CHEMICALLY MODIFIED WITH THIOUREA GROUPS: UDC 543.4:54.412.2.544.723–546.9” (2014) Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, 50(1), pp. 41–43. Available at: https://chemistry.bulletin.knu.ua/article/view/8500 (Accessed: 14 February 2026).