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- [4] LIQUID-LIQUID-EXTRACTION OF COBALT(II) THIOCYANATE WITH HEXAMETHYL PHOSPHORAMIDE - DIRECT SPECTROPHOTOMETRIC DETERMINATION IN THE ORGANIC-PHASE [J]. MIKROCHIMICA ACTA, 1982, 2 (3-4): : 257 - 262
- [6] LIQUID-LIQUID-EXTRACTION OF GALLIUM BY TRI-N-BUTYL PHOSPHATE [J]. HYDROMETALLURGY, 1979, 4 (03) : 285 - 290