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- [24] Notes on the nature of the colorimetric determination of titanium ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1933, 210 (03): : 303 - 303
- [30] STABILITY OF DIPHENYLCARBAZIDE SOLUTIONS FOR COLORIMETRIC DETERMINATION OF CHROMIUM ZAVODSKAYA LABORATORIYA, 1973, (02): : 151 - 152