参考文献
Knorr
Chemische Berichte, 1895 , vol. 28, p. 688
Journal fuer Praktische Chemie (Leipzig), 1896 , vol. <2> 53, p. 127
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Stolz
Chemische Berichte, 1895 , vol. 28, p. 632
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Walker
American Chemical Journal, 1894 , vol. 16, p. 442