参考文献
Hoechster Farbwerke
Patent: DE148054 ;
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Knudsen
Patent: DE143197 ;
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Knudsen
Chemische Berichte, 1909 , vol. 42, p. 4002
Chem. Zentralbl., 1903 , vol. 74, # II p. 271
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Hoechster Farbwerke
Chem. Zentralbl., 1904 , vol. 75, # I p. 134
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Knudsen
Chem. Zentralbl., 1903 , vol. 74, # II p. 271