参考文献
Betz; Kraus
Chemische Berichte, 1938 , vol. 71, p. 1494
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Birckenbach; Kraus
Chemische Berichte, 1938 , vol. 71, p. 1495
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Birckenbach; Buechner
Chemische Berichte, 1940 , vol. 73, p. 1155,1157, 1166, 1167