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Christhu Dhas, R., Benet Charles, J. & Gnanam, F.D. Growth and microhardness studies on NH4Sb2F7 single crystals. J Mater Sci Lett 12, 1395–1397 (1993). https://doi.org/10.1007/BF00241720
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DOI: https://doi.org/10.1007/BF00241720