“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”, Вісник: Хімія, vol. 50, no. 1, pp. 41–43, Nov. 2014, Accessed: Feb. 14, 2026. [Online]. Available: https://chemistry.bulletin.knu.ua/article/view/8500