参考文献
v. Braun; Gmelin; Schultheiss
Chemische Berichte, 1923 , vol. 56, p. 1343
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Plant; Rosser
Journal of the Chemical Society, 1929 , p. 1867
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Pfitzinger
Journal fuer Praktische Chemie (Leipzig), 1897 , vol. <2> 56, p. 292