SORPTION OF TIN-CHLORIDE COMPLEXES OF PLATINUM, RHODIUM AND IRIDIUM ON THE SILICA GEL WITH GRAFTED N-(5-MERCAPTO-1,3,4-THIADIAZOL-2-YL)-N’-PROPYLUREA GROUPS: UDC 541.183:546.92+546.97+546.93. Вісник: Хімія 2008, 45 (2), 39-42.