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- [4] AMPEROMETRIC TITRATION OF COBALT WITH POTASSIUM FERRICYANIDE IN AN APPARATUS WITH A ROTATING PLATINUM MICROELECTRODE INDUSTRIAL LABORATORY, 1958, 24 (02): : 135 - 137
- [8] ALKALINE FERRICYANIDE TITRATION OF COBALT IN DILUTE SOLUTIONS FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1960, 174 (03): : 192 - 193