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2. CRC Handbook of Chemistry and Physics 64th edn, F-45. (CRC, Boca Raton, 1984).
3. Stoner, E. C. Magnetism and Atomic Structure (Methuen, London, 1926) 142 (Curie's corrected result is x=32 x 0.0307/ T).
4. Breck, D. W. Zeolite Molecular Sieves 636, 650 (Wiley New York, 1974).
5. Breck, D. W. Zeolite Molecular Sieves 638 (Wiley, New York, 1974).