参考文献
Sweeting; Johnson
Journal of the American Chemical Society, 1946 , vol. 68, p. 1060
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Farmer; Lawrence; Scott
Journal of the Chemical Society, 1930 , p. 521
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Kogerman
Chem. Zentralbl., 41 Nr. 3/4<1934>283 1935 , vol. 106, # I p. 2964