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- [2] The separation of zirconium and hafnium by crystallisation of ammonium double fluoride ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1924, 141 (2/3): : 284 - 288
- [3] Tetrafluoride of zircon and hafnium ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1934, 221 (02): : 161 - 166
- [8] Hafnium in zircon from rapakivi granite Doklady. Earth science sections, 1994, 326 (07): : 123 - 126
- [9] Unusual hafnium-free zircon Transactions (Doklady) of the Russian Academy of Sciences. Earth science sections., 1996, 345 (08): : 199 - 202