参考文献
Audrieth, L. F.; Schmidt, M. T.
Proceedings of the National Academy of Sciences of the United States of America, 1934 , vol. 20, p. 223
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Emmett, J. B.
Am. J. Sci., 1830 , vol. 18, p. 259
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Hodgkinson, W. R.; Coote, A. H.
Chem. News J. Ind. Sci., 1904 , vol. 90, p. 142
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Hodgkinson, W. R.
Journal of the Society of Chemical Industry, London, 1913 , vol. 32, p. 519
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Loviton, L.
Ann. Chim. anal., 1909 , vol. 14, p. 325
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Gmelin Handbook: NH4: MVol.1, 2.6.5.1, page 110 - 113