57Fe MÖSSBAUER INVESTIGATION OF LOCAL STRUCTURES IN MIXED-VALENCE Fe2F5.7H2O AND ITS AQUEOUS OXIDATION PRODUCTS, α AND β-FeF33.H2O D. Gallie, R. H. Vogel et B. J. EvansJ. Phys. Colloques, 41 C1 (1980) C1-289-C1-290DOI: https://doi.org/10.1051/jphyscol:19801102